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  • Question 1 - Endothelial cells are attached to adjacent cells by adherent junctions via: ...

    Incorrect

    • Endothelial cells are attached to adjacent cells by adherent junctions via:

      Your Answer: Integrins

      Correct Answer: Cadherins

      Explanation:

      Cadherins are calcium dependant molecules that mediate cell to cell adhesions in epithelial and endothelial cells among others.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      11.1
      Seconds

  • Question 2 - The layers of the neocortex from the 1st to the 6th are arranged...

    Incorrect

    • The layers of the neocortex from the 1st to the 6th are arranged as follows:

      Your Answer: External granular, external pyramidal, internal granular, internal pyramidal, molecular, multiform

      Correct Answer: Molecular, external granular, external pyramidal, internal granular, internal pyramidal, multiform

      Explanation:

      The layers of neocortex from outermost to innermost include: the molecular, external granular layer, external pyramidal, internal granular, internal pyramidal and multiform layer.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      71.8
      Seconds

  • Question 3 - Which part of the ECG represents ventricular repolarisation? ...

    Correct

    • Which part of the ECG represents ventricular repolarisation?

      Your Answer: T wave

      Explanation:

      Ventricular repolarisation is denoted by the T wave.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      4
      Seconds

  • Question 4 - What is the most abundant cell type in the central nervous system called?...

    Correct

    • What is the most abundant cell type in the central nervous system called?

      Your Answer: Astrocyte

      Explanation:

      Astrocytes are the supporting cells of the central nervous system. There are two types; the fibrous type is found in the white matter and the protoplasmic type in the grey matter. They are the most abundant cell type in the CNS.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      3.2
      Seconds

  • Question 5 - Heart rate can be slowed by: ...

    Incorrect

    • Heart rate can be slowed by:

      Your Answer: Hypoxia

      Correct Answer: Grief

      Explanation:

      Grief stimulates the parasympathetic nervous system, resulting in a decrease in the heart rate.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      10.6
      Seconds

  • Question 6 - The interior of lysosomes is kept at a pH of around 5 by...

    Correct

    • The interior of lysosomes is kept at a pH of around 5 by the action of:

      Your Answer: H+ ATPase

      Explanation:

      The lysosome maintains its pH differential by pumping in protons (H+ ions) from the cytosol across the membrane via proton pumps and chloride ion channels. Vacuolar H+-ATPases are responsible for transport of protons, while the counter transport of chloride ions is performed by ClC-7 Cl−/H+ antiporter.

    • This question is part of the following fields:

      • Cell Biology
      • Medicine
      36.3
      Seconds

  • Question 7 - Wernicke’s area: ...

    Correct

    • Wernicke’s area:

      Your Answer: Is concerned with comprehension of auditory and visual information

      Explanation:

      Wernicke’s area is located in the categorical hemisphere or left hemisphere in about 95% of right handed individuals and 60% of left handed individuals. It is involved in the comprehension or understanding of written and spoken language. In contrast Broca’s area is involved in production of language.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      28.1
      Seconds

  • Question 8 - Pacemaker cells in the SA node and the AV node are connected by?...

    Correct

    • Pacemaker cells in the SA node and the AV node are connected by?

      Your Answer: Gap junctions

      Explanation:

      Gap junctions allows for rapid propagation of the action potential from one cell to the other. The cells of the heart are connected by gap junctions.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      3.9
      Seconds

  • Question 9 - Which vaso metabolite decreases coronary blood flow? ...

    Incorrect

    • Which vaso metabolite decreases coronary blood flow?

      Your Answer: Prostaglandins

      Correct Answer: Endothelin

      Explanation:

      Decreased O2, increased CO2, lactate, prostaglandins, adenine nucleotides, adenosine, H+, K+ and cyanide produce vasodilation and thus an increase in coronary blood flow.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      19.2
      Seconds

  • Question 10 - A 31 year old female with systemic lupus erythematosus wants to know if...

    Correct

    • A 31 year old female with systemic lupus erythematosus wants to know if she has any predisposing factors for the disease. Which of the following carries the greatest risk of developing SLE?

      Your Answer: Monozygotic twin

      Explanation:

      An overall concordance rate in monozygotic twins was documented to be 25% as compared to dizygotic twins with 3%. First degree relatives have a chance of around 3% of developing the disease. Caucasians show an increase frequency of HLA-B8. The Japanese lupus patients had a stronger association with HLA-DR2.

    • This question is part of the following fields:

      • Connective Tissue
      • Medicine
      18.9
      Seconds

  • Question 11 - A 53 year old female, longstanding case of rheumatoid arthritis comes for a...

    Incorrect

    • A 53 year old female, longstanding case of rheumatoid arthritis comes for a review. Which of the following features are commonly associated with her condition?

      Your Answer: Proteinuria from renal deposition of amyloid

      Correct Answer: Proximal interphalangeal joint involvement in the hands

      Explanation:

      Rheumatoid arthritis is a polyarthritis that results in symmetrical pain and swelling of the affected joints (also at rest). It particularly affects the metacarpophalangeal joints (MCPJs) and proximal interphalangeal joints (PIPJs), not the distal interphalangeal joints (DIPs). Ulcerative colitis and IBD are associated with seronegative arthritides, not RA. The condition can also cause various extra-articular manifestations such as ocular symptoms, rheumatoid nodules and pulmonary fibrosis. Scleritis, episcleritis and keratoconjunctivitis sicca are more common than uveitis. Early intervention with disease-modifying antirheumatic drugs (DMARDs) plays a decisive role in successful treatment.

    • This question is part of the following fields:

      • Connective Tissue
      • Medicine
      54.7
      Seconds

  • Question 12 - Which of the following substances inhibits pancreatic secretion? ...

    Incorrect

    • Which of the following substances inhibits pancreatic secretion?

      Your Answer: Cholecystokinin

      Correct Answer: Pancreatic polypeptide

      Explanation:

      Number of hormones and neurotransmitters can stimulate and inhibit pancreatic exocrine secretion. Cholecystokinin, secretin, vasoactive intestinal peptide and substance P stimulate pancreatic secretion. Pancreatic polypeptide, somatostatin inhibit pancreatic secretion.

    • This question is part of the following fields:

      • Gastrointestinal
      • Medicine
      57.7
      Seconds

  • Question 13 - In addition to its role in digestion and absorption of fats, bile: ...

    Incorrect

    • In addition to its role in digestion and absorption of fats, bile:

      Your Answer: Takes part in bilirubin metabolism

      Correct Answer: Is the major excretory route for lipid-soluble waste products

      Explanation:

      The end product of haem metabolism is bilirubin and jaundice is caused by increased bilirubin levels in the blood. Gallstones are mainly caused by cholesterol and bile pigments. Bile is the main route of excretion for lipid soluble waste products whereas urine is the main route of excretion of water soluble waste products.

    • This question is part of the following fields:

      • Gastrointestinal
      • Medicine
      22.8
      Seconds

  • Question 14 - Concerning surface anatomy, where is the aortic valve found? ...

    Correct

    • Concerning surface anatomy, where is the aortic valve found?

      Your Answer: Situated in the left third intercostal space underneath the sternum

      Explanation:

      The aortic valve is situated in the left 3rd intercostal space just beneath the sternum.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      26.2
      Seconds

  • Question 15 - Treatment of an acute attack of gout with allopurinol may result in which...

    Correct

    • Treatment of an acute attack of gout with allopurinol may result in which of the following?

      Your Answer: Exacerbation and prolongation of the attack

      Explanation:

      Initiation of allopurinol treatment during an attack can exacerbate and prolong the episode. Thus treatment should be delayed until the attack resolves.

    • This question is part of the following fields:

      • Medicine
      • Pharmacology
      9.5
      Seconds

  • Question 16 - Major supplies of glycogen are found in …. ...

    Correct

    • Major supplies of glycogen are found in ….

      Your Answer: Liver and skeletal muscle

      Explanation:

      The two major sites of glycogen storage are the liver and skeletal muscle. The concentration of glycogen is higher in the liver than in muscle however more glycogen is stored in skeletal muscle due to its greater mass.

    • This question is part of the following fields:

      • Medicine
      • Metabolism
      13.6
      Seconds

  • Question 17 - Which of the following is not a feature of Liddle’s syndrome? ...

    Incorrect

    • Which of the following is not a feature of Liddle’s syndrome?

      Your Answer: Hypertension

      Correct Answer: Autosomal recessive inheritance

      Explanation:

      Liddle’s syndrome is a rare autosomal dominant condition characterized by early, and frequently severe, high blood pressure associated with low plasma renin activity, metabolic alkalosis, low blood potassium, and normal to low levels of aldosterone. Liddle syndrome involves abnormal kidney function, with excess reabsorption of sodium and loss of potassium from the renal tubule, and is treated with a combination of low sodium diet and potassium-sparing diuretic drugs (e.g., amiloride).

    • This question is part of the following fields:

      • Endocrinology
      • Medicine
      15.2
      Seconds

  • Question 18 - Select the correct statement regarding the portal vein. ...

    Incorrect

    • Select the correct statement regarding the portal vein.

      Your Answer: It supplies 25% of the total blood flow to the liver.

      Correct Answer: It drains most of the gastrointestinal tract and the spleen.

      Explanation:

      The portal vein supplies 75% of total blood flow to the liver and enters the liver centrally via the porta hepatis. Portal venous flow increases after meals. The portal vein receives blood from the intestines via the superior and inferior mesenteric veins, from the stomach via gastric veins and from the spleen and pancreas via the splenic vein.

    • This question is part of the following fields:

      • Hepatobiliary
      • Medicine
      34.7
      Seconds

  • Question 19 - Where do the spinothalamic axons decussate? ...

    Correct

    • Where do the spinothalamic axons decussate?

      Your Answer: Spinal cord

      Explanation:

      The second order neurons from the spinothalamic tract cross obliquely to the opposite side in the anterior grey and white commissure within one segment of the spinal cord.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      6.1
      Seconds

  • Question 20 - The telomerase is capable of adding several more repeats of telomeres at which...

    Incorrect

    • The telomerase is capable of adding several more repeats of telomeres at which end of the guanosine rich region.

      Your Answer: 2nd end

      Correct Answer: 3rd end

      Explanation:

      Telomerase is a reverse transcriptase that uses the RNA template to synthesize DNA in the 5th-3rd direction resulting in extension of the 3rd end and then translocates it to the newly synthesized end. The GT rich strand is thus elongated.

    • This question is part of the following fields:

      • Genetics
      • Medicine
      23.4
      Seconds

  • Question 21 - Choose the most correct answer, what reduces affinity for oxygen in haemoglobin? ...

    Correct

    • Choose the most correct answer, what reduces affinity for oxygen in haemoglobin?

      Your Answer: All the options are true

      Explanation:

      The strength with which oxygen binds to haemoglobin is affected by several factors. These factors shift or reshape the oxyhaemoglobin dissociation curve. A rightward shift indicates that the haemoglobin under study has a decreased affinity for oxygen. The causes of shift to right can be remembered using the mnemonic, CADET, face Right! for CO2 and CO, Acid (H+), 2,3-DPG, Exercise and Temperature.

    • This question is part of the following fields:

      • Haematology
      • Medicine
      23.9
      Seconds

  • Question 22 - The central veins in the liver: ...

    Correct

    • The central veins in the liver:

      Your Answer: Coalesce to form the hepatic vein

      Explanation:

      The central veins coalesce to form the hepatic vein which in turn drains into the inferior vena cava. The portal vein mainly carries blood from different parts of the GIT and is not drained to the inferior vena cava.

    • This question is part of the following fields:

      • Gastrointestinal
      • Medicine
      14
      Seconds

  • Question 23 - The following are synthesized in the liver EXCEPT? ...

    Incorrect

    • The following are synthesized in the liver EXCEPT?

      Your Answer: Angiotensinogen

      Correct Answer: Cholecystokinin

      Explanation:

      The liver is responsible for the mainstay of protein metabolism, synthesis as well as degradation. It is also responsible for a large part of amino acid synthesis. The liver plays a role in the production of clotting factors as well as red blood cell production. Some of the proteins synthesized by the liver include coagulation factors I (fibrinogen), II (prothrombin), V, VII, VIII, IX, X, XI, XIII, as well as protein C, protein S and antithrombin. The liver is a major site of production for thrombopoietin, a glycoprotein hormone that regulates the production of platelets by the bone marrow. The liver also produces albumin, the most abundant protein in blood serum and angiotensinogen. Cholecystokinin, previously called pancreozymin, is synthesized and secreted by enteroendocrine cells in the duodenum

    • This question is part of the following fields:

      • Gastrointestinal
      • Medicine
      20.7
      Seconds

  • Question 24 - In which area is depolarization initiated? ...

    Correct

    • In which area is depolarization initiated?

      Your Answer: SA node

      Explanation:

      SA node is the pacemaker of the heart. It determines the rate of contractions. It is the place where depolarization is initiated. It exhibits phase 4 depolarization or automaticity. Electrical impulses then spread to the AV node, purkinje fibers, bundle of his and the ventricular muscles.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      13.2
      Seconds

  • Question 25 - The predominant site in the lymph node where B lymphocytes are found is:...

    Correct

    • The predominant site in the lymph node where B lymphocytes are found is:

      Your Answer: Cortex

      Explanation:

      The cortex of the lymph node consists of the lymphoid nodules and sinusoids and posses a germinal centre from which B cells proliferate. The cortex of the lymph node predominately consists of B cells.

    • This question is part of the following fields:

      • Immunology
      • Medicine
      28.2
      Seconds

  • Question 26 - Anti-gastroesophageal reflux mechanisms include the following except: ...

    Incorrect

    • Anti-gastroesophageal reflux mechanisms include the following except:

      Your Answer: The lower oesophageal sphincter

      Correct Answer: Peristaltic movements of the oesophagus

      Explanation:

      The lower oesophageal sphincter contracts preventing reflux of acid into the oesophagus. The sling muscles of the stomach, the crura of the diaphragm and the phreno-oesophageal ligament all play an important role in constricting the lower portion of the oesophagus and preventing reflux. Peristaltic movements do not stop the acid reflux.

    • This question is part of the following fields:

      • Gastrointestinal
      • Medicine
      32.2
      Seconds

  • Question 27 - A 65-year-old man presents to you three weeks after initiating metformin for type...

    Correct

    • A 65-year-old man presents to you three weeks after initiating metformin for type 2 diabetes mellitus. His body mass index is 27.5 kg/m^2. At a dose of 500mg TDS the patient has experienced significant diarrhoea. Even on reducing the dose to 500mg BD his symptoms persisted. What is the most appropriate next step in this patient?

      Your Answer: Start modified release metformin 500mg od with evening meal

      Explanation:

      Here, the patient seems to be intolerant to standard metformin. In such cases, modified-release preparations is considered as the most appropriate next step. There is some evidence that these produce fewer gastrointestinal side-effects in patients intolerant of standard-release metformin.Metformin is a biguanide and reduces blood glucose levels by decreasing the production of glucose in the liver, decreasing intestinal absorption and increasing insulin sensitivity. Metformin decreases both the basal and postprandial blood glucose.Other uses: In Polycystic Ovarian Syndrome (PCOS), Metformin decreases insulin levels, which then decreases luteinizing hormone and androgen levels. Thus acting to normalize the menstruation cycle.Note:Metformin is contraindicated in patients with severe renal dysfunction, which is defined as a glomerular filtration rate (GFR) less than 30 ml/min/1.732m2. Metformin overdose has been associated with hypoglycaemia and lactic acidosis, for this reason, it has a black box warning for lactic acidosis.

    • This question is part of the following fields:

      • Medicine
      • Pharmacology
      10.3
      Seconds

  • Question 28 - Interruption of the left optic tract will result in which visual field defect?...

    Incorrect

    • Interruption of the left optic tract will result in which visual field defect?

      Your Answer: Complete blindness of left eye

      Correct Answer: Right homonymous hemianopia

      Explanation:

      Right homonymous hemianopia is due to a lesion or pressure on the left optic tract. Total blindness of the left eye is due to a complete occlusion of the left optic nerve. Bipolar hemianopia is due to a midline chiasmal lesion. Left nasal hemianopia due to a lesion involving the left perichiasmal area. Right homonymous inferior quadrantanopia is due to involvement of the lower left optic radiations.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      14.2
      Seconds

  • Question 29 - Which of the following causes an increase in venous return? ...

    Correct

    • Which of the following causes an increase in venous return?

      Your Answer: An increase in the negative intra-thoracic pressure

      Explanation:

      During inspiration, intrathoracic pressure becomes more negative and intra-abdominal pressure more positive. This increases the venous pressure gradient from abdomen to thorax and promotes filling of the central veins.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      81.9
      Seconds

  • Question 30 - Which cells secrete insulin? ...

    Correct

    • Which cells secrete insulin?

      Your Answer: B cells of the pancreatic islets

      Explanation:

      Insulin is synthesised and stored by the B cells of the pancreatic islets (70% of islet cells), glucagon is synthesised and stored in the A cells (20%) and somatostatin is synthesised and stored in the D cells (10%).

    • This question is part of the following fields:

      • Endocrinology
      • Medicine
      4.7
      Seconds

  • Question 31 - The V wave in the jugular pulse is caused by: ...

    Incorrect

    • The V wave in the jugular pulse is caused by:

      Your Answer: Ventricular contraction

      Correct Answer: Atrial filling

      Explanation:

      The v wave reflects the passive increase in pressure and volume of the right atrium as it fills in late systole and early diastole.

      The jugular vein pulsations usually have two elevations and two troughs. The first elevation (a wave) corresponds to the slight rise in atrial pressure resulting from atrial contraction. The first descent (x descent) reflects a fall in atrial pressure that starts with atrial relaxation. The second elevation (v wave) corresponds to ventricular systole when blood is entering the right atrium from the vena cavae while the tricuspid valve is closed. Finally, the second descent (y descent) reflects falling right atrial pressure as the tricuspid valve opens and blood drains from the atrium into the ventricle.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      9.6
      Seconds

  • Question 32 - Which hormone is associated with the temperature surge in hot flushes? ...

    Incorrect

    • Which hormone is associated with the temperature surge in hot flushes?

      Your Answer: Testosterone

      Correct Answer: LH

      Explanation:

      Luteinizing hormone or LH is a hormone produced by the anterior pituitary gland. Studies have shown surges in LH levels during menopausal hot flushes, suggesting that a pulsatile release of LH is responsible for increased hypothalamic norepinephrine activity, causing the hot flushes.

    • This question is part of the following fields:

      • Endocrinology
      • Medicine
      17
      Seconds

  • Question 33 - In a 30 year old male with hypertrophic obstructive cardiomyopathy (HOCM), which of...

    Incorrect

    • In a 30 year old male with hypertrophic obstructive cardiomyopathy (HOCM), which of the following is not associated with increased risk of sudden death?

      Your Answer: Nonsustained ventricular tachycardia (NSVT)

      Correct Answer: Age

      Explanation:

      Hypertrophic cardiomyopathy (HCM) is a disease in which a portion of the myocardium (heart muscle) is enlarged without any obvious cause, creating functional impairment of the heart. It is the leading cause of sudden death in young athletes. The major risk factors for sudden death (SD) are recent unexplained syncope unlikely to be neurocardiogenic; HCM-related SD in first-degree or other close relatives; repetitive and/or prolonged nonsustained ventricular tachycardia (NSVT) episodes on Holter or extended ambulatory monitoring; massive left ventricular hypertrophy (LVH) (wall thickness ≥30 mm); extensive/diffuse late gadolinium enhancement (LGE); end-stage heart failure usually with systolic dysfunction; and thin-walled akinetic LV apical aneurysm with regional scarring.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      22.9
      Seconds

  • Question 34 - What is the primary cause of ketoacidosis in Type 1 diabetes? ...

    Correct

    • What is the primary cause of ketoacidosis in Type 1 diabetes?

      Your Answer: Lipolysis

      Explanation:

      in type 1 diabetics the lack of insulin in the bloodstream prevents glucose absorption, thereby inhibiting the production of oxaloacetate (a crucial precursor to the β-oxidation of fatty acids) through reduced levels of pyruvate (a by-product of glycolysis), and can cause unchecked ketone body production (through fatty acid metabolism or lipolysis) potentially leading to dangerous glucose and ketone levels in the blood.

    • This question is part of the following fields:

      • Endocrinology
      • Medicine
      11.4
      Seconds

  • Question 35 - Which of the following are exclusively innervated by parasympathetic nerves? ...

    Incorrect

    • Which of the following are exclusively innervated by parasympathetic nerves?

      Your Answer: Parotid glands

      Correct Answer: Circular muscle of iris

      Explanation:

      Circular muscle of iris is exclusively supplied by the parasympathetic nerves.

    • This question is part of the following fields:

      • Medicine
      • Neurology
      27
      Seconds

  • Question 36 - Choose the correct statement about Aminoglycosides and Chloramphenicol ...

    Incorrect

    • Choose the correct statement about Aminoglycosides and Chloramphenicol

      Your Answer: Aminoglycosides work on Ribosome 50 S peptidyl transferase

      Correct Answer: Chloramphenicol works on Ribosome 50 S peptidyl transferase

      Explanation:

      Aminoglycoside is a category of traditional Gram-negative antibacterial therapeutic agents that inhibit protein synthesis. Aminoglycoside antibiotics display bactericidal activity against gram-negative aerobes and some anaerobic bacilli where resistance has not yet arisen, but generally not against Gram-positive and anaerobic Gram-negative bacteria.Chloramphenicol is a bacteriostatic by inhibiting protein synthesis. It prevents protein chain elongation by inhibiting the peptidyl transferase activity of the bacterial ribosome. It specifically binds to A2451 and A2452 residues in the 23S rRNA of the 50S ribosomal subunit, preventing peptide bond formation.

    • This question is part of the following fields:

      • Infectious Diseases
      • Medicine
      11
      Seconds

  • Question 37 - In the absence of insulin: ...

    Correct

    • In the absence of insulin:

      Your Answer: Glucose uptake by most of the brain is normal

      Explanation:

      Although it is known that insulin levels affect glucose uptake, oxidation and storage in peripheral tissues, its role in the brain isn’t as clear. However, studies have shown that bulk brain glucose uptake isn’t affected by insulin. Glucose transport into the neurons is GLUT3 dependent, and its transport into glia and brain endothelial cells rely on GLUT1. Insulin isn’t necessary for GLUT1 or GLUT3, which explains why brain glucose uptake isn’t affected by insulin levels.

    • This question is part of the following fields:

      • Endocrinology
      • Medicine
      10.5
      Seconds

  • Question 38 - All valves are closed in which phase of the cardiac cycle? ...

    Correct

    • All valves are closed in which phase of the cardiac cycle?

      Your Answer: Isovolumetric relaxation

      Explanation:

      The cardiac cycle refers to a complete heartbeat from its generation to the beginning of the next beat, and so includes the diastole, the systole, and the intervening pause.The first stage, diastole, is when the semilunar valves (the pulmonary valve and the aortic valve) close, the atrioventricular (AV) valves (the mitral valve and the tricuspid valve) open, and the whole heart is relaxed. The second stage, atrial systole, is when the atrium contracts, and blood flows from atrium to the ventricle.The third stage, isovolumic contraction is when the ventricles begin to contract, the AV and semilunar valves close, and there is no change in volume. The fourth stage, ventricular ejection, is when the ventricles are contracting and emptying, and the semilunar valves are open. During the fifth stage, isovolumic relaxation time, pressure decreases, no blood enters the ventricles, the ventricles stop contracting and begin to relax, and the semilunar valves close due to the pressure of blood in the aorta.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      23.8
      Seconds

  • Question 39 - Cholinergic nerves from the vagus innervate the SA and AV nodes via which...

    Correct

    • Cholinergic nerves from the vagus innervate the SA and AV nodes via which receptor in the heart?

      Your Answer: M2 receptor

      Explanation:

      M2 receptor is found in the heart. M3 and M4 are associated with smooth muscle.

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      17.9
      Seconds

  • Question 40 - According to Poiseuille’s formula, which 1 of the following will lead to increased...

    Correct

    • According to Poiseuille’s formula, which 1 of the following will lead to increased flow?

      Your Answer: Shorter tube

      Explanation:

      V = π p r4 / 8 η lwhere V = discharge volume flow (m3/s)p = pressure difference between the ends of the pipe (N/m2, Pa)r = internal radius of pipe (m)l = length of pipe (m)η = viscosity of fluid

    • This question is part of the following fields:

      • Cardiovascular
      • Medicine
      10.7
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Cardiovascular (8/13) 62%
Medicine (22/40) 55%
Neurology (3/6) 50%
Cell Biology (1/1) 100%
Connective Tissue (1/2) 50%
Gastrointestinal (1/5) 20%
Pharmacology (2/2) 100%
Metabolism (1/1) 100%
Endocrinology (3/5) 60%
Hepatobiliary (0/1) 0%
Genetics (0/1) 0%
Haematology (1/1) 100%
Immunology (1/1) 100%
Infectious Diseases (0/1) 0%
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