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  • Question 1 - The most common complication of paracetamol overdose is: ...

    Correct

    • The most common complication of paracetamol overdose is:

      Your Answer: Hepatic failure

      Explanation:

      The maximum daily dose of paracetamol in an adult is 4 grams. Doses greater than this can lead to hepatotoxicity and, less frequently, acute kidney injury. Early symptoms of paracetamol toxicity include nausea, vomiting, and abdominal pain, and usually settle within 24 hours. Symptoms of liver damage include right subcostal pain and tenderness, and this peaks 3 to 4 days after paracetamol ingestion. Other signs of hepatic toxicity include encephalopathy, bleeding, hypoglycaemia, and cerebral oedema.

    • This question is part of the following fields:

      • Central Nervous System
      • Pharmacology
      7.6
      Seconds

  • Question 2 - A 43-year-old woman presented to the emergency room after an incident of slipping...

    Incorrect

    • A 43-year-old woman presented to the emergency room after an incident of slipping and falling onto her back and left hip. Upon physical examination, it was noted that she has pain on hip abduction, but normal hip extension.

      Which of the following muscles was most likely injured in this case?

      Your Answer: Semitendinosus

      Correct Answer: Gluteus medius

      Explanation:

      The primary hip extensors are the gluteus maximus and the hamstrings such as the long head of the biceps femoris, the semitendinosus, and the semimembranosus. The extensor head of the adductor magnus is also considered a primary hip extensor.

      The hip abductor muscle group is located on the lateral thigh. The primary hip abductor muscles include the gluteus medius, gluteus minimus, and tensor fasciae latae.
      The secondary hip abductors include the piriformis, sartorius, and superior fibres of the gluteus maximus.

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      19.7
      Seconds

  • Question 3 - Regarding the lung roots, which of the following statements is CORRECT: ...

    Correct

    • Regarding the lung roots, which of the following statements is CORRECT:

      Your Answer: Generally the pulmonary arteries lie superior to the pulmonary veins in the lung root.

      Explanation:

      Each lung root contains a pulmonary artery, two pulmonary veins, a main bronchus, bronchial vessels, nerves and lymphatics. Generally the pulmonary artery is superior in the lung root, the pulmonary veins are inferior and the bronchi are somewhat posterior in position. The vagus nerves pass posterior to the lung roots while the phrenic nerves pass anterior to them.

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      10.2
      Seconds

  • Question 4 - A patient presents with a laceration on his hand and wrist that has...

    Incorrect

    • A patient presents with a laceration on his hand and wrist that has cut the nerve that innervates opponens pollicis.
      The opponens pollicis muscle is innervated by which of the following nerves? Select ONE answer only.

      Your Answer:

      Correct Answer: The recurrent branch of the median nerve

      Explanation:

      Opponens pollicis is a small, triangular muscle that forms part of the thenar eminence. It originates from the flexor retinaculum and the tubercle of trapezium bone and inserts into the whole length of the first metacarpal bone on its radial side.
      Opponens pollicis is innervated by the recurrent branch of the median nerve and receives its blood supply from the superficial palmar arch.
      The main action of opponens pollicis is to flex the first metacarpal bone at the carpometacarpal joint, which opposes the thumb towards the centre of the palm. It also medially rotates the first metacarpal bone at the carpometacarpal joint.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 5 - Which of the following is NOT a side effect of phenytoin: ...

    Incorrect

    • Which of the following is NOT a side effect of phenytoin:

      Your Answer:

      Correct Answer: Ototoxicity

      Explanation:

      Adverse effects of phenytoin include:
      Nausea and vomiting
      Drowsiness, lethargy, and loss of concentration
      Headache, dizziness, tremor, nystagmus and ataxia
      Gum enlargement or overgrowth
      Coarsening of facial features, acne and hirsutism
      Skin rashes
      Blood disorders

    • This question is part of the following fields:

      • Central Nervous System
      • Pharmacology
      0
      Seconds

  • Question 6 - Through which of the following anatomical structures does an indirect inguinal hernia pass?...

    Incorrect

    • Through which of the following anatomical structures does an indirect inguinal hernia pass?

      Your Answer:

      Correct Answer: External oblique

      Explanation:

      Inguinal hernias are subdivided into direct and indirect.

      An indirect hernia occurs when abdominal contents protrude through the internal inguinal ring and into the inguinal canal. This occurs lateral to the inferior epigastric vessels. The hernia contents may extend into the scrotum.

      A direct inguinal hernia is protrusion of abdominal contents through the transversalis fascia within Hesselbach’s triangle. The borders of Hesselbach’s triangle are the inferior epigastric vessels superolaterally, the rectus sheath medially, and inguinal ligament inferiorly.

      The deep (internal) inguinal ring is located above and halfway between the pubic tubercle and the anterior superior iliac spine. This serves as the entrance to the inguinal canal. The superficial (external) inguinal ring lies immediately above and medial to the pubic tubercle. This triangular opening is a defect in the external oblique aponeurosis, and forms the exit of the inguinal canal.

    • This question is part of the following fields:

      • Abdomen And Pelvis
      • Anatomy
      0
      Seconds

  • Question 7 - A 26-year old female comes to the Emergency Room with complaints of bloody...

    Incorrect

    • A 26-year old female comes to the Emergency Room with complaints of bloody stools. She reports that prior to the passage of bloody stools, she experienced a sharp pain during defecation. Medical history reveals that she has been experiencing constipation for the past 2 weeks. After completing her medical history and physical examination, the attending physician gives an initial diagnosis of an anal fissure.

      Which of the following nerves transmit painful sensation from the anus, resulting in the pain associated with anal fissure?

      Your Answer:

      Correct Answer: Inferior rectal nerve

      Explanation:

      A fissure in ano is a tear in the anoderm distal to the dentate line. The pathophysiology of anal fissure is thought to be related to trauma from either the passage of hard stool or prolonged diarrhoea. A tear in the anoderm causes spasm of the internal anal sphincter, which results in pain, increased tearing, and decreased blood supply to the anoderm. The site of the anal fissure in the sensitive lower half of the anal canal, which is innervated by the inferior rectal nerve, results in reflex spasm of the external anal sphincter, aggravating the condition. Because of the intense pain, anal fissures may have to be examined under local anaesthesia.

      The inferior rectal nerve is a branch of the pudendal nerve. This nerve runs medially across the ischiorectal fossa and supplies the external anal sphincter, the mucous membrane of the lower half of the anal canal, and the perianal skin.

    • This question is part of the following fields:

      • Abdomen And Pelvis
      • Anatomy
      0
      Seconds

  • Question 8 - Regarding the trachea, which of the following statements is INCORRECT: ...

    Incorrect

    • Regarding the trachea, which of the following statements is INCORRECT:

      Your Answer:

      Correct Answer: A cricothyrotomy involves making an opening in the neck inferior to the cricoid cartilage.

      Explanation:

      A cricothyrotomy involves making an opening in the median cricothyroid ligament (the medial part of the cricothyroid membrane), between the cricoid cartilage below and the thyroid cartilage above.

    • This question is part of the following fields:

      • Anatomy
      • Head And Neck
      0
      Seconds

  • Question 9 - Which of the following would you NOT expect from a deep fibular nerve...

    Incorrect

    • Which of the following would you NOT expect from a deep fibular nerve palsy:

      Your Answer:

      Correct Answer: Loss of sensation over heel

      Explanation:

      Damage to the deep fibular nerve results in loss of dorsiflexion of the ankle, with resultant foot drop with high-stepping gait, loss of toe extension, weakness of foot inversion and loss of sensation over the webspace between the 1st and 2nd toes.

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      0
      Seconds

  • Question 10 - You are reviewing a patient complaining of loss of vision. Previous images shows...

    Incorrect

    • You are reviewing a patient complaining of loss of vision. Previous images shows a lesion at the optic chiasm. What type of visual field defect are you most likely to see in a lesion at the optic chiasm:

      Your Answer:

      Correct Answer: Bitemporal hemianopia

      Explanation:

      A lesion at the optic chiasm will result in a bitemporal hemianopia.
      A lesion of the optic nerve will result in ipsilateral monocular visual loss.
      A lesion of the optic tract will result in a contralateral homonymous hemianopia.

    • This question is part of the following fields:

      • Anatomy
      • Central Nervous System
      0
      Seconds

  • Question 11 - A patient suffers a lower limb fracture that causes damage to the nerve...

    Incorrect

    • A patient suffers a lower limb fracture that causes damage to the nerve that innervates peroneus longus.
      Peroneus longus receives its innervation from which of the following nerves? Select ONE answer only.

      Your Answer:

      Correct Answer: Superficial peroneal nerve

      Explanation:

      Peroneus brevis is innervated by the superficial peroneal nerve.
      Peroneus longus is innervated by the superficial peroneal nerve.
      Peroneus tertius is innervated by the deep peroneal nerve.

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      0
      Seconds

  • Question 12 - A 38-year-old taxi driver sustained blunt force trauma to his anterior chest from...

    Incorrect

    • A 38-year-old taxi driver sustained blunt force trauma to his anterior chest from the steering wheel of his car after falling asleep while driving headlong into an oncoming HGV lorry. Bruising around his sternum was observed, which appears to be the central point of impact.

      Which of the following structures is most likely injured by the blunt force trauma?

      Your Answer:

      Correct Answer: Right ventricle

      Explanation:

      In its typical anatomical orientation, the heart has 5 surfaces formed by different internal divisions of the heart:

      Anterior (or sternocostal) – Right ventricle
      Posterior (or base) – Left atrium
      Inferior (or diaphragmatic) – Left and right ventricles
      Right pulmonary – Right atrium
      Left pulmonary – Left ventricle

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      0
      Seconds

  • Question 13 - A 26-year-old man is involved in a motorcycle accident that results in an...

    Incorrect

    • A 26-year-old man is involved in a motorcycle accident that results in an open fracture of his tibia and fibula. The nerve that innervates peroneus tertius is damaged as a consequence of his injuries.
      Peroneus tertius receives its innervation from which of the following nerves? Select ONE answer only.

      Your Answer:

      Correct Answer: Deep peroneal nerve

      Explanation:

      Peroneus brevis is innervated by the superficial peroneal nerve.
      Peroneus longus is innervated by the superficial peroneal nerve.
      Peroneus tertius is innervated by the deep peroneal nerve.

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      0
      Seconds

  • Question 14 - A 30-year-old rugby player suffers from an anterior cruciate ligament tear while pivoting...

    Incorrect

    • A 30-year-old rugby player suffers from an anterior cruciate ligament tear while pivoting to attempt to run around another player. An MRI was performed and showed that his injury caused two other structures in the knee joint to be injured.

      Which of the following structures is most likely also injured?

      Your Answer:

      Correct Answer: Medial meniscus

      Explanation:

      The O’Donoghue unhappy triad or terrible triad often occurs in contact and non-contact sports, such as basketball, football, or rugby, when there is a lateral force applied to the knee while the foot is fixated on the ground. This produces an abduction-external rotation mechanism of injury.

      The O’Donoghue unhappy triad comprises three types of soft tissue injury that frequently tend to occur simultaneously in knee injuries. O’Donoghue described the injuries as: anterior cruciate ligament tear, medial collateral ligament injury, and medial meniscal tear (lateral compartment bone bruise).

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      0
      Seconds

  • Question 15 - Due to a traffic accident, a male patient was unable to lift his...

    Incorrect

    • Due to a traffic accident, a male patient was unable to lift his arm, indicating an injury at the glenohumeral joint. Based on the patient’s current condition, which nerve or nerves are may likely damaged?

      Your Answer:

      Correct Answer: Axillary and suprascapular nerve

      Explanation:

      A suprascapular nerve injury causes numbness in the shoulder, as well as weakness in abduction and external rotation.

      Damage to the axillary nerve can result in shoulder or arm muscle weakness, as well as difficulty lifting the arm. This is because the deltoid and supraspinatus muscles, which are innervated by the axillary and suprascapular nerves, are responsible for abduction of the arm at the shoulder joint.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 16 - A 36-year-old man who works in a farm presents with a deep laceration...

    Incorrect

    • A 36-year-old man who works in a farm presents with a deep laceration over the palm of his hand. A median nerve block was performed at his wrist to facilitate wound exploration and closure.

      Which of the following statements regarding median nerve blocks at the wrist is considered correct?

      Your Answer:

      Correct Answer: The needle should be inserted approximately 2.5 cm proximal to flexor retinaculum

      Explanation:

      A median nerve block is a simple, safe, and effective method of obtaining anaesthesia to the palmar aspect of the thumb, index finger, middle finger, radial portion of the palm and ring finger. The median nerve lies deep to the flexor retinaculum and about one centimetre under the skin of the volar wrist.
      The palmaris longus tendon lies superficial to the retinaculum and is absent in up to 20% of patients.
      The median nerve is located slightly lateral (radial) to the palmaris longus tendon and medial (ulnar) to the flexor carpi radialis tendon.

      The procedure is as follows:
      – Check sensation and motor function of the median nerve. Wear gloves and use appropriate barrier precautions.
      – Locate the flexor carpi radialis and palmaris longus tendons, which become prominent when the patient flexes the wrist against resistance. The palmaris longus tendon is usually the more prominent of the two tendons.
      – Needle-entry site: The needle will be inserted adjacent to the radial (lateral) border of the palmaris longus tendon just proximal to the proximal wrist crease. If the palmaris longus tendon is absent, the needle-entry site is about 1 cm ulnar to the flexor carpi radialis tendon.
      – Cleanse the site with antiseptic solution. Place a skin wheal of anaesthetic, if one is being used, at the needle-entry site.
      – Insert the needle perpendicularly through the skin and advance it slowly until a slight pop is felt as the needle penetrates the flexor retinaculum. When paraesthesia in the distribution of the median nerve confirms proper needle placement, withdraw the needle 1 to 2 mm.
      – Aspirate to exclude intravascular placement and then slowly (i.e., over 30 to 60 seconds) inject about 3 mL of anaesthetic. If the patient does not feel paraesthesia, redirect the needle in an ulnar direction, under the palmaris longus tendon. If paraesthesia is still not felt, slowly inject 3 to 5 mL of anaesthetic in the proximity of the nerve 1 cm deep to the tendon.
      – Allow about 5 to 10 minutes for the anaesthetic to take effect.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 17 - The 'bucket handle' movement of the thoracic wall describes which of the following movements:...

    Incorrect

    • The 'bucket handle' movement of the thoracic wall describes which of the following movements:

      Your Answer:

      Correct Answer: The middles of the shafts of the ribs moving upwards and laterally

      Explanation:

      Because the middles of the shafts of the ribs are lower than either the anterior or posterior end, elevation of the ribs also moves the middles of the shafts laterally. This ‘bucket handle’ upwards and lateral movement increases the lateral dimensions of the thorax.

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      0
      Seconds

  • Question 18 - A 35-year-old lady has suffered a serious brain injury. Her uvula has deviated...

    Incorrect

    • A 35-year-old lady has suffered a serious brain injury. Her uvula has deviated to the right, according to inspection. Which of the following nerves is likely to be affected?

      Your Answer:

      Correct Answer: Left vagus nerve

      Explanation:

      When the vagus nerve is damaged, the soft palate is paralyzed and the uvula is shifted away from the affected side. The vagus nerve innervates the uvulae muscle, which forms the uvula’s core. If only one side is innervated, contraction of the active muscle will draw the uvula towards it.

    • This question is part of the following fields:

      • Anatomy
      • Cranial Nerve Lesions
      0
      Seconds

  • Question 19 - Which of the following nerves supplies the abductor pollicis brevis? ...

    Incorrect

    • Which of the following nerves supplies the abductor pollicis brevis?

      Your Answer:

      Correct Answer: The recurrent branch of the median nerve

      Explanation:

      Abductor pollicis brevis is innervated by the recurrent (thenar) branch of median nerve (root value C8 and T1).

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 20 - Which of the following statements is false regarding the biceps brachii muscle? ...

    Incorrect

    • Which of the following statements is false regarding the biceps brachii muscle?

      Your Answer:

      Correct Answer: It pronates the radioulnar joint in the forearm

      Explanation:

      The biceps brachii muscle is one of the chief muscles of the arm. The origin at the scapula and the insertion into the radius of the biceps brachii means it can act on both the shoulder joint and the elbow joint, which is why this muscle participates in a few movements of the arm. It derives its name from its two heads which merge in one unique distal body, defining the unusual structure of the muscle.

      The biceps brachii muscle is supplied by the musculocutaneous nerve (C5-C6), a branch of the brachial plexus.

      Arterial supply to the biceps brachii muscle varies considerably, coming from up to eight vessels originating from the brachial artery in the middle third of the arm.

      In the shoulder joint both muscle heads partially enforce opposite movements. The long head pulls the arm away from the trunk (abduction) and turns it inwards (inward rotation) whereas the short head pulls the arm back towards the trunk (adduction). When both heads contract simultaneously it leads to an arm bend (flexion). In the elbow joint the muscle bends the forearm (flexion) and rotates it outwards (supination). The supination is most powerful in a flexed elbow. In addition to the movement functions, the biceps has the important task to support the humeral head within the shoulder joint. Its antagonist is the triceps brachii in the posterior compartment of the arm.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 21 - A patient is sent in by her GP with suspected ectopic pregnancy. Tubal...

    Incorrect

    • A patient is sent in by her GP with suspected ectopic pregnancy. Tubal ectopic pregnancies occur most commonly in which part of the uterine tube:

      Your Answer:

      Correct Answer: Ampulla

      Explanation:

      Ectopic pregnancy most commonly occurs in the ampulla (70% of cases).

    • This question is part of the following fields:

      • Abdomen
      • Anatomy
      0
      Seconds

  • Question 22 - A man presents to the emergency department with an injury that has damaged...

    Incorrect

    • A man presents to the emergency department with an injury that has damaged the opponens pollicis muscle.

      Which of the following statements regarding the opponens pollicis muscle is considered correct?

      Your Answer:

      Correct Answer: It flexes the first metacarpal bone at the carpometacarpal joint

      Explanation:

      Opponens pollicis is a muscle of thenar eminence, it is triangular in shape and lies deep to flexor pollicis brevis and abductor pollicis brevis. It originates from the flexor retinaculum, tubercles of scaphoid and trapezium, abductor pollicis longus tendon.

      Its insertion is in the radial side of the base of proximal phalanx of thumb. It is supplied by the median nerve (C8, T1). It receives blood supply from superficial arch.

      It flexes the metacarpal bone medially across the palm, also rotating it medially, causing opposition, the palmar aspect of the terminal segment of thumb contacts the flexor aspects of any other digit.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 23 - Regarding the tongue, which of the following statements is CORRECT: ...

    Incorrect

    • Regarding the tongue, which of the following statements is CORRECT:

      Your Answer:

      Correct Answer: The lymphatic supply of the tongue drains to the jugulo-omohyoid node of the deep cervical chain.

      Explanation:

      All lymphatics from the tongue ultimately drain into the deep cervical chain of nodes along the internal jugular vein, particularly the jugulo-omohyoid lymph node.

    • This question is part of the following fields:

      • Anatomy
      • Head And Neck
      0
      Seconds

  • Question 24 - A 70-year-old man presents with right-sided hemiplegia and loss of joint position sense,...

    Incorrect

    • A 70-year-old man presents with right-sided hemiplegia and loss of joint position sense, vibratory sense, and discriminatory touch. Upon further physical examination, it was observed that her tongue deviates to the left-hand side. An MRI and CT scan was ordered and results showed that he was suffering a left-sided stroke.

      Branches of which of the following arteries are most likely implicated in the case?

      Your Answer:

      Correct Answer: Anterior spinal artery

      Explanation:

      Medial medullary syndrome is a form of stroke that affects the medial medulla of the brain. It is caused by a lesion in the medial part of the medulla, which is due to an infraction of vertebral arteries and/or paramedian branches of the anterior spinal artery.

      It is characterized by contralateral paralysis of the upper and lower limb of the body, a contralateral decrease in proprioception, vibration, and/or fine touch sensation, paresthesias or less commonly dysesthesias in the contralateral trunk and lower limb, and loss of position and vibration sense with proprioceptive dysfunction. Ipsilateral deviation of the tongue due to ipsilateral hypoglossal nerve damage can also be seen.

    • This question is part of the following fields:

      • Anatomy
      • Central Nervous System
      0
      Seconds

  • Question 25 - A patient suffers an injury to the nerve that innervates gluteus medius.​
    The gluteus...

    Incorrect

    • A patient suffers an injury to the nerve that innervates gluteus medius.​
      The gluteus medius muscle is innervated by which of the following nerves? Select ONE answer only.

      Your Answer:

      Correct Answer: Superior gluteal nerve

      Explanation:

      Gluteus minimus is innervated by the superior gluteal nerve.
      Gluteus medius is innervated by the superior gluteal nerve.
      Gluteus maximus is innervated by the inferior gluteal nerve.

    • This question is part of the following fields:

      • Anatomy
      • Lower Limb
      0
      Seconds

  • Question 26 - A patient suffers a stab wound to the neck. The entry point of...

    Incorrect

    • A patient suffers a stab wound to the neck. The entry point of the blade is situated within the posterior triangle of the neck.
      Which of the following muscles is most likely to be involved? Select ONE answer only.

      Your Answer:

      Correct Answer: Anterior scalene

      Explanation:

      The anterior triangle is the triangular area of the neck found anteriorly to the sternocleidomastoid muscle. It is formed by the anterior border of sternocleidomastoid laterally, the median line of the neck medially and by the inferior border of the mandible superiorly. The apex of the anterior triangle extends towards the manubrium sterni. The anterior triangle contains:
      Muscles: thyrohyoid, sternothyroid, sternohyoid muscles
      Organs: thyroid gland, parathyroid glands, larynx, trachea, esophagus, submandibular gland, caudal part of the parotid gland
      Arteries: superior and inferior thyroid, common carotid, external carotid, internal carotid artery (and sinus), facial, submental, lingual arteries
      Veins: anterior jugular veins, internal jugular, common facial, lingual, superior thyroid, middle thyroid veins, facial vein, submental vein, lingual veins
      Nerves: vagus nerve (CN X), hypoglossal nerve (CN XII), part of sympathetic trunk, mylohyoid nerve

      The posterior triangle is a triangular area found posteriorly to the sternocleidomastoid muscle. It has three borders; anterior, posterior and inferior borders. The anterior border is the posterior margin of the sternocleidomastoid muscle. The posterior border is the anterior margin of the trapezius muscle, while the inferior border is the middle one-third of the clavicle. The investing layer of deep cervical fascia and integument forms the roof of the space, while the floor is covered with the prevertebral fascia along with levator scapulae, splenius capitis and the scalene muscles. The inferior belly of omohyoid subdivides the posterior triangle into a small supraclavicular, and a large occipital, triangle.
      Contents:
      Vessels: the third part of the subclavian artery, suprascapular and transverse cervical branches of the thyrocervical trunk, external jugular vein, lymph nodes
      Nerves: accessory nerve (CN XI), the trunks of the brachial plexus, fibers of the cervical plexus
      Of the muscles listed in the options, only the anterior scalene is situated within the posterior triangle of the neck.

    • This question is part of the following fields:

      • Anatomy
      • Head And Neck
      0
      Seconds

  • Question 27 - A 35 year old man presents with a deep laceration to the proximal...

    Incorrect

    • A 35 year old man presents with a deep laceration to the proximal part of the forearm. On further assessment, the patient is unable to flex the metacarpophalangeal joints and interphalangeal joints of the index, middle finger and the thumb.

      The ring and little fingers are intact but there is weakness at the proximal interphalangeal joint.

      There is also loss of sensation over the lateral palm and the palmar surface of the lateral three and a half fingers.

      Which of these nerve(s) has most likely been affected?

      Your Answer:

      Correct Answer: Median nerve

      Explanation:

      A median nerve injury affecting the extrinsic and intrinsic muscles of the hand will present with:

      Loss of sensation to the lateral palm and the lateral three and a half fingers.

      Weakness of flexion at the metacarpophalangeal joints of the index and middle finger. This is because of paralysis of the lateral two lumbricals.

      Weakness of flexion of the proximal interphalangeal joints of all four fingers due to paralysis of the flexor digitorum superficialis

      Weakness of flexion at the distal interphalangeal joints of the index and middle finger following paralysis of the lateral half of the flexor digitorum profundus.
      Weakness of thumb flexion, abduction and opposition due to paralysis of the flexor pollicis longus and thenar muscles

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 28 - Where on the body is the radial artery pulsation best palpated? ...

    Incorrect

    • Where on the body is the radial artery pulsation best palpated?

      Your Answer:

      Correct Answer: At the wrist just lateral to the flexor carpi radialis tendon

      Explanation:

      The radial artery lies lateral to the large tendon of the flexor carpi radialis muscle and anterior to the pronator quadratus at the distal end of the radius. The flexor carpi radialis muscle is used as a landmark in locating the pulse.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      0
      Seconds

  • Question 29 - Regarding the hard palate, which of the following statements is CORRECT: ...

    Incorrect

    • Regarding the hard palate, which of the following statements is CORRECT:

      Your Answer:

      Correct Answer: Lymphatic vessels from the palate usually drain into deep cervical lymph nodes.

      Explanation:

      Lymphatic vessels from the pharynx and palate drain into the deep cervical lymph nodes.

    • This question is part of the following fields:

      • Anatomy
      • Head And Neck
      0
      Seconds

  • Question 30 - All of the following typically occurs as part of normal inspiration except: ...

    Incorrect

    • All of the following typically occurs as part of normal inspiration except:

      Your Answer:

      Correct Answer: Contraction of the internal intercostal muscles

      Explanation:

      Passive inspiration is a result of contraction of the diaphragm (depressing the diaphragm) and the external intercostal muscles (elevating the ribs).
      In inspiration, several movements occur. These are:
      1. elevation of the sternal ends of the ribs (‘pump handle’ movement),
      2. elevation of the lateral shafts of the ribs (‘bucket handle’ movement)
      3. depression of the diaphragm.
      These result in expansion of the thorax in an anteroposterior, transverse and vertical direction respectively. There is an increased intrathoracic volume and decreased intrathoracic pressure and air is drawn into the lungs.

    • This question is part of the following fields:

      • Anatomy
      • Thorax
      0
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Central Nervous System (1/1) 100%
Pharmacology (1/1) 100%
Anatomy (0/2) 0%
Upper Limb (0/1) 0%
Abdomen And Pelvis (0/1) 0%
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