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  • Question 1 - A ‘claw hand’ is usually associated with injury to which of the following...

    Correct

    • A ‘claw hand’ is usually associated with injury to which of the following nerves?

      Your Answer: Ulnar nerve

      Explanation:

      A ‘claw hand’ is associated with injury to the ulnar nerve at the wrist affecting the interossei, lumbricals and hypothenar muscles of the hand. It is characterized by hypothenar eminence wasting, hyperextended metacarpophalangeal joints and flexed interphalangeal joints.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      25.6
      Seconds

  • Question 2 - When you rest your elbows on a desk, what bony landmark of the...

    Incorrect

    • When you rest your elbows on a desk, what bony landmark of the upper limb are you resting on?

      Your Answer: Radial tuberosity

      Correct Answer: Olecranon process of the ulna

      Explanation:

      At the upper and back part of the ulna, there exists a curved eminence which is the olecranon process. This process lodges in the olecranon fossa of the humerus. It’s posterior surface is subcutaneous and this triangular area is what you rest your elbow upon.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      46.4
      Seconds

  • Question 3 - A machine worker fractured the medial epicondyle of his right humerus resulting in...

    Correct

    • A machine worker fractured the medial epicondyle of his right humerus resulting in damage to an artery running with the ulnar nerve posterior to the medial epicondyle. The artery injured is the?

      Your Answer: Superior ulnar collateral

      Explanation:

      The superior ulnar collateral artery runs posterior to the medial epicondyle of the humerus, accompanied by the ulnar nerve. This artery arises from the brachial artery near the middle of the arm and ends under the flexor carpi ulnaris muscle by anastomosing with two arteries: the posterior ulnar recurrent and inferior ulnar collateral.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      22.4
      Seconds

  • Question 4 - Following an accident, a man was unable to extend the wrist and metacarpophalangeal...

    Incorrect

    • Following an accident, a man was unable to extend the wrist and metacarpophalangeal joints, despite sensation being intact. Which nerve was likely damaged?

      Your Answer: Radial nerve

      Correct Answer: Posterior interosseous nerve

      Explanation:

      The posterior interosseous nerve which causes, what is known as the posterior interosseous nerve syndrome. The nerve is compressed before it bifurcates to form the medial and lateral branches. The compression is beyond the origin of the branches to the radial wrist extensors and the radial sensory nerve. The result of such a case is paralysis of the digital extensors and the extensor carpi ulnaris, resulting in dorsoradial deviation of the wrist.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      19.9
      Seconds

  • Question 5 - After severe injury of the upper limb following an accident. The humerus is...

    Incorrect

    • After severe injury of the upper limb following an accident. The humerus is injured as well as the nerve which innervates the muscles of the anterior compartment of the arm. Which nerve is injured?

      Your Answer: Median

      Correct Answer: Musculocutaneous

      Explanation:

      The musculoskeletal nerve supplies the muscles of the anterior compartment of the arm including the coracobrachialis, biceps brachii and the greater part of the brachialis. This nerve derives its fibres from the fifth, sixth and seventh cervical nerves and arises from the lateral cord of the brachial plexus. It also provides a branch to the elbow joint.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      77.4
      Seconds

  • Question 6 - Regarding the extensor retinaculum of the wrist, which of these is CORRECT? ...

    Correct

    • Regarding the extensor retinaculum of the wrist, which of these is CORRECT?

      Your Answer: It prevents the tendons of the posterior compartment of the forearm from ‘bowstringing’ when the hand is extended at the wrist

      Explanation:

      This extensor retinaculum, as the name indicates, holds the tendons of the extensors against the dorsal surface of the distal radius and ulna. Therefore, the correct answer is that it prevents bowstringing of the extensor tendons with wrist extension. It forms compartments between it and its bony attachment, and these compartments guide and hold the tendons.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      74
      Seconds

  • Question 7 - Which Statement is true of the brachial plexus? ...

    Correct

    • Which Statement is true of the brachial plexus?

      Your Answer: The posterior cord continues as the axillary nerve

      Explanation:

      The lateral cord continues as the musculocutaeous nerve.

      The medial cord continues as the ulnar nerve.

      The posterior cord continues as the radial nerve and the axillary nerve.

      The nerve to subclavius muscle is a branch of the C6 root.

      The suprascapular nerve is a branch from the upper trunk.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      112.5
      Seconds

  • Question 8 - What is the nerve supply of the muscle that is inserted onto the...

    Correct

    • What is the nerve supply of the muscle that is inserted onto the crest of the lesser tubercle of the humerus?

      Your Answer: Lower subscapular

      Explanation:

      The muscle is the subscapularis muscle which is supplied by the lower subscapular nerve.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      62.6
      Seconds

  • Question 9 - The muscle that depresses the glenoid fossa directly is the: ...

    Incorrect

    • The muscle that depresses the glenoid fossa directly is the:

      Your Answer: Supraspinatus

      Correct Answer: Pectoralis minor

      Explanation:

      Situated at the upper part of the thorax beneath the pectoralis major, is a thin pectoralis minor, triangular muscle. It originates from the third, fourth and fifth ribs, near the cartilage and from the aponeurosis which covers the intercostals. These fibres move upwards and laterally to join and form a flat tendon. This is inserted into the medial border and upper surface of the coracoid process of the scapula. Through this medial anterior thoracic nerve, fibres from the pectoralis minor are received from the eighth cervical and first thoracic nerves. This pectoralis minor pushes down on the point of the shoulder (glenoid fossa), drawing the scapula downward and medially towards the thorax which throws the inferior angle backwards.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      77.1
      Seconds

  • Question 10 - A lad involved in a road traffic accident is rushed to casualty where...

    Incorrect

    • A lad involved in a road traffic accident is rushed to casualty where physical examination reveals that he has limited extension of his right humerus. Which of the following nerves is most likely to have been injured?

      Your Answer: Upper subscapular nerve

      Correct Answer: Thoracodorsal nerve

      Explanation:

      Extension of the humerus is a function of the latissimus dorsi. This muscle is supplied by the thoracodorsal nerve which is a branch of the posterior cord of the plexus whose fibres are derived from cranial nerves V, VI and VII.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      89
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Anatomy (5/10) 50%
Upper Limb (5/10) 50%
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