00
Correct
00
Incorrect
00 : 00 : 00
Session Time
00 : 00
Average Question Time ( Mins)
  • Question 1 - Which of the following is found to be elevated in a case of...

    Correct

    • Which of the following is found to be elevated in a case of hepatocellular carcinoma?

      Your Answer: AFP

      Explanation:

      Alpha-fetoprotein (AFP) is a glycoprotein that is normally produced by the yolk sac of the embryo, and then the fetal liver. It is elevated in the new-born and thus, also in the pregnant women. Eventually, it decreases in the first year of life to reach the adult normal value of < 20 ng/ml by 1 year of age. Markedly elevated levels (>500 ng/ml) in a high-risk patient is considered diagnostic for primary hepatocellular carcinoma (HCC). Moreover, due to smaller tumours secreting less quantities of AFP, rising levels can be a better indication. However, not all hepatocellular carcinomas produce AFP. Also, the level of AFP is not a prognostic factor. Populations where hepatitis B and HCC are common (e.g.: sub-Saharan Africans, ethnic Chinese) can see AFP levels as high as 100,000 ng/ml, whereas levels are low (about 3000 ng/ml) in regions with lesser incidences of HCC.

      AFP can also be elevated up to 500 ng/ml in conditions like embryonic teratocarcinomas, hepatoblastomas, fulminant hepatitis, hepatic metastases from gastrointestinal tract cancers, some cholangiocarcinomas). Lesser values are seen in acute and chronic hepatitis.

      Overall, the sensitivity of AFP value ≥20 ng/ml is 39-64% and the specificity is 76%–91%. Value of 500 ng/ml is considered as the diagnostic cut-off level for HCC.

    • This question is part of the following fields:

      • Gastrointestinal; Hepatobiliary
      • Pathology
      90.6
      Seconds
  • Question 2 - Paracentesis of ascetic fluid in a 45-year old woman revealed the following :...

    Correct

    • Paracentesis of ascetic fluid in a 45-year old woman revealed the following : clear, yellow fluid with protein 2.0 g/dl and a few mesothelial and mononuclear cells seen. No malignant cells seen. What is the likely diagnosis?

      Your Answer: Cirrhosis

      Explanation:

      Ascites develops either from:

        • Increased  accumulation
          • Increased capillary permeability
          • Increased venous pressure
          • Decreased protein (oncotic pressure)
        • Decreased clearance
          • Increased lymphatic obstruction

      Cause

      • Transudate (<30g/L protein) (Systemic disease)
        • Liver (Cirrhosis)
        • Cardiac e.g. RHF, CCF, SBE right heart valve disease and constrictive Pericarditis
        • Renal failure
        • Hypoalbuminaemia (nephrosis)
      • Exudate (>30g/L protein) (Local disease)
        • Malignancy
        • Venous obstruction e.g. Budd-Chiari, Schistosomiasis
        • Pancreatitis
        • Lymphatic obstruction
        • Infection (especially TB)

      Cirrhosis is disease of the liver that is characterized by fibrosis leading to disorganization of the hepatic architecture. It shows the development of regenerative nodules surrounded by dense fibrotic tissue. Cirrhosis shows non-specific symptoms initially, which include fatigue, anorexia and weight loss. It can later progress to portal hypertension, ascites and liver failure.

    • This question is part of the following fields:

      • Gastrointestinal; Hepatobiliary
      • Pathology
      65.9
      Seconds
  • Question 3 - Injury of the ventral rami at this cervical spinal level will result in...

    Correct

    • Injury of the ventral rami at this cervical spinal level will result in paralysis of the rectus capitis anterior muscle:

      Your Answer: C1, C2

      Explanation:

      The rectus capitis anterior is a short, flat muscle, situated immediately behind the upper part of the longus capitis. It is also known as the obliquus capitis superior. It aids in flexion of the head and the neck. Nerve supple is from C1 and C2.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      158.6
      Seconds
  • Question 4 - What is the correct order of structures a needle must pass before it...

    Correct

    • What is the correct order of structures a needle must pass before it enters the pleural cavity?

      Your Answer: External intercostals – internal intercostals – innermost intercostals – parietal pleura

      Explanation:

      The correct order of structures from superficial to deep are: the skin and subcutaneous tissue, the external intercostals followed by internal intercostals, innermost intercostals and finally parietal pleura.

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      57.2
      Seconds
  • Question 5 - A 70-year old man had had a large indirect inguinal hernia for 3...

    Correct

    • A 70-year old man had had a large indirect inguinal hernia for 3 years. He presents at the out patient clinic complaining of pain in the scrotum. There is, however, no evidence of obstruction or inflammation. You conclude that the hernial sac is most probably compressing the:

      Your Answer: Ilioinguinal nerve

      Explanation:

      The ilioinguinal nerve arises together with the iliohypogastric nerve from the first lumbar nerve to emerge from the lateral border of the psoas major muscle just below the iliohypogastric and passing obliquely across the quadratus lumborum and iliacus muscles. It perforates the transversus abdominis, near the anterior part of the iliac crest and communicates with the iliohypogastric nerve between the internal oblique and the transversus. It then pierces the internal oblique to distribute filaments to it and accompanying the spermatic cord through the subcutaneous inguinal ring, is distributed to the skin of the upper and medial parts of the thigh, the skin over the root of the penis and the upper part of the scrotum in man and to the skin covering the mons pubis and labium majus in the woman. As the ilioinguinal nerve runs through the inguinal canal, it could easily be compressed by a hernial sac.

      The femoral branch of genitofemoral nerve provides sensory innervation of the upper medial thigh.

      The femoral nerve innervates the compartment of the thigh and also has some cutaneous sensory branches to the thigh.

      The iliohypogastric nerve innervates the skin of the lower abdominal wall, upper hip and upper thigh. The subcostal nerve innervates the skin of the anterolateral abdominal wall and the anterior scrotal nerve is a terminal branch of the ilioinguinal nerve.

    • This question is part of the following fields:

      • Abdomen
      • Anatomy
      198.2
      Seconds
  • Question 6 - What is the most likely cause of prolonged bleeding time in a 40...

    Incorrect

    • What is the most likely cause of prolonged bleeding time in a 40 year old women admitted for a laparoscopic cholecystectomy?

      Your Answer: Haemophilia

      Correct Answer: Thrombocytopaenia

      Explanation:

      Bleeding time is related to platelet function, thus a decrease in platelet function, as seen in thrombocytopenia, DIC and von Willebrand disease in which platelet aggregation is defective, leads to an increase in bleeding time. It is not affected by a decrease or deficiency of any other clotting factors. Aspirin and other COX inhibitors prolong bleeding time along with warfarin and heparin.

    • This question is part of the following fields:

      • General
      • Physiology
      235.3
      Seconds
  • Question 7 - A medical intern wanting to perform her first thoracentesis (remove fluid from the...

    Incorrect

    • A medical intern wanting to perform her first thoracentesis (remove fluid from the pleural cavity) wishes to be reminded where to insert the needle to aspirate in order to avoid injuring the lung or neurovascular elements. Where is this place?

      Your Answer: The bottom of interspace 6 in the midaxillary line

      Correct Answer: The bottom of interspace 9 in the midaxillary line

      Explanation:

      Thoracentesis is performed in the costodiaphragmatic recess. The needle needs to be inserted below the level of the lungs to avoid injury to the lungs. At the paravertebral line, is between ribs 10 and 12, at the midaxillary line between ribs 8 and 10 and at the midclavicular line between interspaces 6 and 8. The needle should be inserted at the top of the rib (or the bottom of the interspace) to avoid damage to the neurovascular structures found below the rib running in the costal groove.

      The recommended location for the needle insertion varies depending upon the source. It is critical that the patient hold his or her breath to avoid piercing of the lung.

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      207
      Seconds
  • Question 8 - A 70-year-old male who has smoked since his teens complains of progressive shortness...

    Correct

    • A 70-year-old male who has smoked since his teens complains of progressive shortness of breath and a persistent cough. He is diagnosed with COPD. Which of the following abnormalities is most likely to be present in his pulmonary function tests?

      Your Answer: Increased residual volume

      Explanation:

      Chronic obstructive pulmonary disease (COPD) is a type of obstructive lung disease characterized by long-term poor airflow. The main symptoms include shortness of breath and cough with sputum production. The best diagnostic test for evaluating patients with suspected chronic obstructive pulmonary disease (COPD) is lung function measured with spirometry. Key spirometrical measures may be obtained with a portable office spirometer and should include forced vital capacity (FVC) and the normal forced expiratory volume in the first second of expiration (FEV1). The ratio of FEV1 to forced vital capacity (FEV1/FVC) normally exceeds 0.75. Patients with COPD typically present with obstructive airflow. Complete pulmonary function testing may show increased total lung capacity, functional residual capacity and residual volume. A substantial loss of lung surface area available for effective oxygen exchange causes diminished carbon monoxide diffusion in the lung (DLco) in patients with emphysema. Tobacco smoking is the most common cause of COPD, with factors such as air pollution and genetics playing a smaller role.

    • This question is part of the following fields:

      • Physiology
      • Respiratory
      105.6
      Seconds
  • Question 9 - Extracellular body fluid as compared with intracellular body fluid: ...

    Incorrect

    • Extracellular body fluid as compared with intracellular body fluid:

      Your Answer: Has greater volume

      Correct Answer: Is relatively rich in glucose

      Explanation:

      The percentages of body water contained in various fluid compartments add up to total body water (TBW). This water makes up a significant fraction of the human body, both by weight and by volume. Ensuring the right amount of body water is part of fluid balance, an aspect of homeostasis. The extracellular fluid (ECF) includes all fluids outside the cells. This fluid can be divided into three fluid departments: interstitial (in the tissue spaces) fluid, blood plasma and lymph, and specialised compartments called transcellular fluid. The extracellular fluid surrounds all the cells in the body and is in equilibrium with the intracellular fluid. So, its composition must remain fairly constant even though substances are passing into and out of the cells. The interstitial fluid, though called a fluid, is in a reality a gel-like composition made up of: water, proteoglycan molecules and collagen. The extracellular fluid constitutes 40% of total body water, with intracellular fluid making up the remaining 60%. It is relatively rich in glucose.

    • This question is part of the following fields:

      • Fluids & Electrolytes
      • Physiology
      92.7
      Seconds
  • Question 10 - An elderly, diabetic man has firm, tender nodules at the base of his...

    Incorrect

    • An elderly, diabetic man has firm, tender nodules at the base of his left middle and ring fingers, which he can't extend fully. What's the most likely diagnosis?

      Your Answer: Giant-cell tumour of the tendon sheath

      Correct Answer: Fibromatosis

      Explanation:

      This case is suggestive of Dupuytren’s contracture due to palmar fibromatosis. Its incidence is higher in men over the age of 45 years, and it increases in patients with diabetes, alcoholism, or epilepsy. These nodules are benign, usually appearing as a tender nodule in the palm which becomes painless. The disease has an aggressive clinical behaviour and recurs frequently.

    • This question is part of the following fields:

      • Orthopaedics
      • Pathology
      205.1
      Seconds
  • Question 11 - A 34-year-old woman has been suffering from headaches, fever, vomiting, and confusion for...

    Correct

    • A 34-year-old woman has been suffering from headaches, fever, vomiting, and confusion for the last 5 days. A CT scan reveals an oedematous mass with ring enhancement in the left temporal region. It is biopsied, revealing glial cells, necrosis, neutrophils and lymphocytes. What is the most likely diagnosis?

      Your Answer: Cerebral abscess

      Explanation:

      A cerebral abscess can result from direct extension of cranial infections, penetrating head trauma, haematogenous spread, or for unknown causes. An abscess forms when an area of cerebral inflammation becomes necrotic and encapsulated by glial cells and fibroblasts. Oedema around the abscess can increase the intracranial pressure. Symptoms result from increased intracranial pressure and mass effects. It is most frequent in the third decade of life, and when it occurs in children, it is usually associated with congenital heart disease.

    • This question is part of the following fields:

      • Neurology
      • Pathology
      203.1
      Seconds
  • Question 12 - The nasolacrimal duct is a membranous canal. It extends from the lower part...

    Correct

    • The nasolacrimal duct is a membranous canal. It extends from the lower part of the lacrimal sac and drains into which structure?

      Your Answer: Inferior meatus

      Explanation:

      The nasolacrimal duct carries tears from the lacrimal sac of the eye into the nasal cavity. The duct begins in the eye socket between the maxillary and lacrimal bones, from where it passes downwards and backwards. The opening of the nasolacrimal duct into the inferior nasal meatus of the nasal cavity is partially covered by a mucosal fold (valve of Hasner or plica lacrimalis). Excess tears flow through the nasolacrimal duct which drains into the inferior nasal meatus.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      196.3
      Seconds
  • Question 13 - Signals pass through neuromuscular junctions via the neurotransmitter acetylcholine. After release from the...

    Correct

    • Signals pass through neuromuscular junctions via the neurotransmitter acetylcholine. After release from the skeletal neuromuscular junction, acetylcholine:

      Your Answer: Causes postsynaptic depolarisation

      Explanation:

      Acetylcholine is released from the presynaptic membrane into the cleft where it binds to the ion gated channels on the post synaptic membrane, causing them to open. This results in sodium entering into the fibre and further depolarizing it, creating an action potential.

    • This question is part of the following fields:

      • General
      • Physiology
      617.6
      Seconds
  • Question 14 - A 42 year old man presents with end stage renal failure and is...

    Correct

    • A 42 year old man presents with end stage renal failure and is prepared to receive a kidney from his best friend. HLA testing showed that they are not a 100% match and he is given immunosuppressant therapy for this. Three months later when his renal function is assessed, he showed signs of deteriorating renal function, with decreased renal output, proteinuria of +++ and RBCs in the urine. He was given antilymphocyte globulins and his condition reversed. During the crisis period the patient is likely to be suffering from?

      Your Answer: Acute rejection

      Explanation:

      This patients is most likely experiencing an acute rejection. It is a cell mediated attack against the organ that has been transplanted. Antigens are either presented by blood borne cells with in the graft or antigen presenting cells in the body may be presenting class I and class II molecules that have been shed by the graft. Class I will activate CD8 and class II, CD4 cells, both of which will attack the graft.

      Chronic rejection is a slow process which occurs months to years after the transplant. The exact mechanism is not very well understood but it probably involves a combination of Type III and Type IV hypersensitivity directed against the foreign MHC molecules which look like self-MHC presenting a foreign antigen.

      Hyperacute Transplant Rejection occurs almost immediately and is often evident while you are still in surgery. It is caused by accidental ABO Blood type mismatching of the donor and recipient which almost never happens anymore. This means the host has preformed antibodies against the donated tissue.

    • This question is part of the following fields:

      • Inflammation & Immunology; Renal
      • Pathology
      400.1
      Seconds
  • Question 15 - Cranial nerve XII, the hypoglossal nerve, innervates which one of the following muscles...

    Correct

    • Cranial nerve XII, the hypoglossal nerve, innervates which one of the following muscles in the list?

      Your Answer: Hyoglossus

      Explanation:

      The cranial nerve XII, hypoglossal nerve, innervates all the intrinsic and extrinsic muscles of the tongue except the palatoglossus. The muscles of the tongue innervated by this nerve include the extrinsic muscles; hyoglossus, styloglossus, genioglossus and the intrinsic muscles; superior longitudinal, inferior longitudinal, vertical and transverse muscles. The salpingopharyngeus, palatoglossus and the palatopharyngeus muscles are innervated by the vagus nerve. The stylopharyngeus muscle is innervated by the glossopharyngeal nerve (CN IX). The mylohyoid muscle is innervated by the inferior alveolar nerve, a branch of the mandibular nerve. Finally, the geniohyoid muscle is innervated by the olfactory nerve (CN I) via the hypoglossal nerve.

    • This question is part of the following fields:

      • Anatomy
      • Head & Neck
      200
      Seconds
  • Question 16 - A 45 year old lady has been diagnosed with Friedreich's ataxia that has...

    Correct

    • A 45 year old lady has been diagnosed with Friedreich's ataxia that has affected her medial group of nuclei in the anterior horn of the spinal cord. Which of the following structures will have their muscles affected?

      Your Answer: Axial muscles

      Explanation:

      The cells in the anterior horn can be arranged in the following three main groups: medial, lateral and central. The medial group of nuclei in the anterior horn of the spinal cord are located along the entire length of the spinal cord and are responsible for the innervation of the axial muscles of the body ( muscles of the head and neck region). Thus this disease will most likely affect the functioning of the muscles of the head and neck.

    • This question is part of the following fields:

      • Anatomy
      • Neurology
      99.9
      Seconds
  • Question 17 - Arterial blood gas analysis of a man admitted with acute exacerbation of chronic...

    Correct

    • Arterial blood gas analysis of a man admitted with acute exacerbation of chronic obstructive pulmonary disease (COPD) showed the following: pH = 7.28, p(CO2) = 65.5 mmHg, p(O2)= 60 mmHg and standard bicarbonate = 30.5 mmol/l. This patient had:

      Your Answer: Respiratory acidosis

      Explanation:

      Acidosis with high p(CO2) and normal standard bicarbonate indicates respiratory acidosis, commonly seen in acute worsening of COPD patients. Respiratory acidosis occurs due to alveolar hypoventilation which leads to increased arterial carbon dioxide concentration (p(CO2)). This in turn decreases the HCO3 –/p(CO2) and decreases pH. In acute respiratory acidosis, the p(CO2) is raised above the upper limit of normal (over 45 mm Hg) with a low pH. However, in chronic cases, the raised p(CO2) is accompanied with a normal or near-normal pH due to renal compensation and an increased serum bicarbonate (HCO3 – > 30 mmHg).

    • This question is part of the following fields:

      • Physiology
      • Respiratory
      54.3
      Seconds
  • Question 18 - In which situation is a stretch reflex such as knee jerk likely to...

    Correct

    • In which situation is a stretch reflex such as knee jerk likely to be exaggerated?

      Your Answer: In upper motor neuron lesion

      Explanation:

      A stretch reflex is a monosynaptic reflex that causes muscle contraction in response to stretching within that muscle. The sensory apparatus in a muscle that are sensitive to stretch are the muscle spindles. The patellar (knee jerk) reflex is an example. In upper motor neuron lesions, the stretch reflexes tend to be brisk due to loss of inhibitory signals on gamma neurons through the lateral reticulospinal tract.

    • This question is part of the following fields:

      • Neurology
      • Physiology
      22.6
      Seconds
  • Question 19 - What is a major source of fuel being oxidised by the skeletal muscles...

    Incorrect

    • What is a major source of fuel being oxidised by the skeletal muscles of a man who has undergone starvation for 7 days?

      Your Answer: Muscle triglycerides

      Correct Answer: Serum fatty acids

      Explanation:

      Starvation is the most extreme form of malnutrition. Prolonged starvation can lead to permanent organ damage and can be fatal. Starved individuals eventually lose significant fat and muscle mass as the body uses these for energy.

    • This question is part of the following fields:

      • Gastroenterology
      • Physiology
      74.4
      Seconds
  • Question 20 - A 50-year-old woman goes to the doctor complaining of myalgia, muscle cramps, and...

    Correct

    • A 50-year-old woman goes to the doctor complaining of myalgia, muscle cramps, and weakness; she is diagnosed with severe hypokalaemia. Which of the following is the most common cause of hypokalaemia?

      Your Answer: Prolonged vomiting

      Explanation:

      Potassium is one of the body’s major ions. Nearly 98% of the body’s potassium is intracellular. The ratio of intracellular to extracellular potassium is important in determining the cellular membrane potential. Small changes in the extracellular potassium level can have profound effects on the function of the cardiovascular and neuromuscular systems. Hypokalaemia may result from conditions as varied as renal or gastrointestinal (GI) losses, inadequate diet, transcellular shift (movement of potassium from serum into cells) and medications. The important causes of hypokalaemia are:

      Renal losses: renal tubular acidosis, hyperaldosteronism, magnesium depletion, leukaemia (mechanism uncertain).

      GI losses: vomiting or nasogastric suctioning, diarrhoea, enemas or laxative use, ileal loop.

      Medication effects: diuretics (most common cause), β-adrenergic agonists, steroids, theophylline, aminoglycosides.

      Transcellular shift: insulin, alkalosis.

      Severe hypokalaemia, with serum potassium concentrations of 2.5–3 meq/l, may cause muscle weakness, myalgia, tremor, muscle cramps and constipation.

    • This question is part of the following fields:

      • Fluids & Electrolytes
      • Physiology
      65.7
      Seconds
  • Question 21 - The stomach is an organ that is divided into several important anatomical parts....

    Correct

    • The stomach is an organ that is divided into several important anatomical parts. These parts of the stomach have varied arterial blood supply that ensure that the whole organ receive oxygenated blood. Which of the following arteries if ligated, will not render any portion of the stomach ischaemic?

      Your Answer: Superior mesenteric

      Explanation:

      The blood supply to the stomach is through the following arteries:

      – The superior mesenteric artery supplies blood to the lower part of the duodenum, pancreas and two-thirds of the transverse colon. Thus ligation of the superior mesenteric artery would not affect the stomach.

      – The right and the left gastroepiploic arteries supply the greater curvature of the stomach – along its edges.

      – The short gastric artery supplies blood to the upper portion of the of the greater curvature and the fundus of the stomach.

      – The gastroduodenal artery supplies blood to the distal part of the stomach (the pyloric sphincter) and the proximal end of the duodenum.

      – The left gastroepiploic and the short gastric are branches of the splenic artery and therefore ligation of the splenic artery would directly affect the stomach.

    • This question is part of the following fields:

      • Abdomen
      • Anatomy
      145.3
      Seconds
  • Question 22 - Anthrax is an infection caused by the bacterium Bacillus anthracis. Anthrax spores have been used...

    Correct

    • Anthrax is an infection caused by the bacterium Bacillus anthracis. Anthrax spores have been used as a biological warfare weapon. What is the drug of choice in treating anthrax infection?

      Your Answer: Ciprofloxacin

      Explanation:

      Early antibiotic treatment of anthrax is essential. A delay may significantly lessen the chances for survival of the patient. Treatment for anthrax infection include large doses of intravenous and oral antibiotics, such as fluoroquinolones (ciprofloxacin), doxycycline, erythromycin, vancomycin, or penicillin.

    • This question is part of the following fields:

      • Microbiology
      • Pathology
      70.7
      Seconds
  • Question 23 - A 51-year old woman after undergoing a barium swallowing was discovered to be...

    Incorrect

    • A 51-year old woman after undergoing a barium swallowing was discovered to be suffering from an oesophageal hiatal hernia. Which muscle fibres of the diaphragm border this hernia directly if the stomach herniates through an enlarged oesophageal hiatus?

      Your Answer: Costal fibres

      Correct Answer: Right crus

      Explanation:

      The oesophageal hiatus is a natural fissure on the thoracic diaphragm that allows passage of the oesophagus and the vagal nerve. The oesophageal hiatus is located in one of the tendinous structures of the diaphragm that connect it to the spine which is known as the right crus. In case of an hiatal hernia, this diaphragmatic structure would be the one bordering the hernia as it is the structure that encircles the oesophageal hiatus.

    • This question is part of the following fields:

      • Abdomen
      • Anatomy
      673.2
      Seconds
  • Question 24 - If a 68-year-old man is diagnosed with a testicular seminoma that reaches the...

    Correct

    • If a 68-year-old man is diagnosed with a testicular seminoma that reaches the tunica albuginea and involves the tunica vaginalis, with retroperitoneal lymph nodes greater than 5cm, LDH 1.4 times the reference levels, β-hCG 4250 mIU/ml and AFP 780 ng/ml, what's the clinical stage in this case?

      Your Answer: Stage IIC

      Explanation:

      According to the AJCC, the clinical staging for testicular seminoma is:
      Stage IA: T1 N0 M0 S0
      Stage IB: T2/3/4 N0 M0 S0
      Stage IC: any T N0 M0 S1/2/3
      Stage IIA: any T N1 M0 S0/1
      Stage IIB: any T N2 M0 S0/1
      Stage IIC: any T N3 M0 S0/1
      Stage IIIA: any T any N M1a S0/1
      Stage IIIB: any T any N M0/1a S2
      Stage IIIC: any T any N M1a/1b S3.
      The patient in this case has IIC stage

    • This question is part of the following fields:

      • Pathology
      • Urology
      353.5
      Seconds
  • Question 25 - A man had noticed weakness in his left arm causing flexion of the...

    Incorrect

    • A man had noticed weakness in his left arm causing flexion of the elbow and supination of the forearm. Which nerve in this case was injured?

      Your Answer: Radial

      Correct Answer: Musculocutaneous

      Explanation:

      The musculocutaneous nerve supplies the biceps brachii and the brachialis muscles. The first one flexes the elbow and the shoulder. It is also involved in supination. The brachialis muscle flexes the forearm. The injury to the musculocutaneous nerve results in paralysis of these muscles.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      91.6
      Seconds
  • Question 26 - Lung compliance is increased by: ...

    Correct

    • Lung compliance is increased by:

      Your Answer: Emphysema

      Explanation:

      Lung compliance is increased by emphysema, acute asthma and increasing age and decreased by alveolar oedema, pulmonary hypertension, atelectasis and pulmonary fibrosis.

    • This question is part of the following fields:

      • Physiology
      • Respiratory
      26
      Seconds
  • Question 27 - A 48-year-old man smoker presented to the doctor complaining of a persistent cough...

    Correct

    • A 48-year-old man smoker presented to the doctor complaining of a persistent cough and shortness of breath. A chest X-ray indicated the presence of a right upper lung mass. Biopsy of the mass revealed the presence of pink cells with large, irregular nuclei. What is the most probable diagnosis?

      Your Answer: Squamous cell carcinoma

      Explanation:

      Squamous cell carcinoma, is a type of non-small cell lung cancer that accounts for approximately 30% of all lung cancers. The presence of squamous cell carcinoma is often related with a long history of smoking and the presence of persistent respiratory symptoms. Chest radiography usually shows the presence of a proximal airway lesion. Histological findings include keratinisation that takes the form of keratin pearls with pink cytoplasm and cells with large, irregular nuclei.

    • This question is part of the following fields:

      • Pathology
      • Respiratory
      33.9
      Seconds
  • Question 28 - Which tumour site is more commonly involved in adults than in children? ...

    Correct

    • Which tumour site is more commonly involved in adults than in children?

      Your Answer: Lung

      Explanation:

      In adults, the most common primary site of tumour is in the lungs, compared to children wherein the most common primary site is the blood.

    • This question is part of the following fields:

      • Neoplasia
      • Pathology
      14.4
      Seconds
  • Question 29 - A 72 year old man suffered a MI. What is the approximate time...

    Incorrect

    • A 72 year old man suffered a MI. What is the approximate time needed by the scar tissue of the MI to recover and attain full strength?

      Your Answer: 3 days

      Correct Answer: Several months

      Explanation:

      A week following a MI attack, a little collagen starts to form and deposit. By the end of the 2nd week, neovascularisation of the scar occurs, with some collagen being laid down in a haphazard fashion. By this time the scar attains some strength. During the next 6 months, collagen is constantly being laid down and is rearranged in order to shrink the scar. Most of the blood vessels by this time have regenerated, decreasing vascularity of the scar reaching full maturity.

    • This question is part of the following fields:

      • Cell Injury & Wound Healing; Cardiovascular
      • Pathology
      26.8
      Seconds
  • Question 30 - A 32-year old gentleman came to the emergency department, complaining of progressively increasing...

    Incorrect

    • A 32-year old gentleman came to the emergency department, complaining of progressively increasing weakness in his arms and legs over 5 days. On examination, there is symmetrical weakness on both sides of his face, along with weakness of the proximal and distal muscles of all four limbs. No loss of sensation noted. Deep tendon reflexes could not be elicited and plantar responses were downward. On enquiry, it was revealed that he had an upper respiratory tract infection 10 days ago. The likely diagnosis is:

      Your Answer: Myasthenia gravis

      Correct Answer: Guillain–Barré syndrome

      Explanation:

      Guillain–Barré syndrome (GBS) is an acute, autoimmune polyradiculoneuropathy which affects the peripheral nervous system and is usually triggered by an acute infectious process. 75% patients have a history of acute infection within the past 1–4 weeks, usually respiratory or gastrointestinal. immunisations have also been implicated. The most common form is acute inflammatory demyelinating polyneuropathy. It results in an ascending paralysis with complete loss of deep tendon reflexes. Treatment includes immunoglobulins and supportive care. However, the disease may be fatal due to severe pulmonary complications and dysautonomia.

    • This question is part of the following fields:

      • Neurology
      • Physiology
      208.5
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Gastrointestinal; Hepatobiliary (2/2) 100%
Pathology (8/10) 80%
Anatomy (7/10) 70%
Head & Neck (3/3) 100%
Thorax (1/2) 50%
Abdomen (2/3) 67%
General (1/2) 50%
Physiology (6/10) 60%
Respiratory (4/4) 100%
Fluids & Electrolytes (1/2) 50%
Orthopaedics (0/1) 0%
Neurology (3/4) 75%
Inflammation & Immunology; Renal (1/1) 100%
Gastroenterology (0/1) 0%
Microbiology (1/1) 100%
Urology (1/1) 100%
Upper Limb (0/1) 0%
Neoplasia (1/1) 100%
Cell Injury & Wound Healing; Cardiovascular (0/1) 0%
Passmed