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  • Question 1 - 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
      7.9
      Seconds

  • Question 2 - The muscle that forms the posterior wall of the axilla along with the...

    Incorrect

    • The muscle that forms the posterior wall of the axilla along with the scapula, subscapularis muscle and teres major muscle is the?

      Your Answer: Supraspinatus

      Correct Answer: Latissimus dorsi

      Explanation:

      The latissimus dorsi forms the posterior wall of the axilla along with the scapula. It is responsible for extension, adduction, transverse extension also known as horizontal abduction, flexion from an extended position, and (medial) internal rotation of the shoulder joint. It also has a synergistic role in extension and lateral flexion of the lumbar spine.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      21.9
      Seconds

  • Question 3 - A mechanic sustained a deep laceration to his right cubital fossa which resulted...

    Incorrect

    • A mechanic sustained a deep laceration to his right cubital fossa which resulted in him unable to move the proximal radioulnar joint of his right arm. Which muscles was affected?

      Your Answer: Triceps brachii

      Correct Answer: Pronator teres

      Explanation:

      The correct answer is the pronator teres muscle. This muscle arises from 2 heads of origin: the humerus and ulnar. Between the 2 heads is the site of entrance of median nerve to the forearm. This muscle acts on the proximal radio-ulnar joint to rotate the radius on the ulna, otherwise known as pronation. It also assists in forearm flexion if the radius is fixed.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      41.7
      Seconds

  • Question 4 - When a young boy falls on his outstretched hand, he fractures one of...

    Correct

    • When a young boy falls on his outstretched hand, he fractures one of the bones at his wrist joint. The doctors told his parents that the fractured bone has special importance as it is that bone that articulates with the distal end of the radius. Which one of the following is it?

      Your Answer: Scaphoid

      Explanation:

      It is the scaphoid bone that articulates with the radius at this level. It is located at the radial side of the wrist and is considered the largest bone in the proximal row of carpal bones. It articulates with the radius via its superior surface. This bone also articulates with trapezium and trapezoid bones via the inferior surface, capitate and lunate medially.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      22.3
      Seconds

  • Question 5 - The superior ulnar collateral artery is a direct branch of this artery: ...

    Correct

    • The superior ulnar collateral artery is a direct branch of this artery:

      Your Answer: Brachial

      Explanation:

      The brachial artery gives rise to a small branch at the middle of the arm, which is the superior collateral artery. It descends accompanied by the ulnar nerve and anastomoses with the posterior ulnar recurrent and inferior ulnar collateral.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      12.6
      Seconds

  • Question 6 - A young man was thrown from a vehicle in a collision. He landed...

    Incorrect

    • A young man was thrown from a vehicle in a collision. He landed on his head and shoulder tip, stretching the left side of his neck. A neurological examination revealed that the fifth and sixth cervical nerves had been torn from the spinal cord. What is the most obvious clinical manifestation of this?

      Your Answer: Medial rotation

      Correct Answer: Abduction

      Explanation:

      In the case of injuries to the upper roots of the brachial plexus there is complete loss of abduction. The muscle performing this movement is the supraspinatus. This initiates the movement, followed by the deltoid muscle, which allows for complete abduction. Both these muscles are innervated by nerves originating from C5 and C6. The injury to these roots results in a condition named Erb-Duchenne’s palsy.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      48.9
      Seconds

  • Question 7 - Which of the following muscles are involved in abduction of the wrist? ...

    Correct

    • Which of the following muscles are involved in abduction of the wrist?

      Your Answer: Extensor carpi radialis brevis and flexor carpi radialis

      Explanation:

      The muscle of the wrist that cause abduction of the wrist otherwise also know as radial flexion of the wrist are the following:

      -Abductor Pollicis Longus

      -Flexor Carpi Radialis

      -Extensor Carpi Radialis Longus

      -Extensor Carpi Radialis Brevis

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      45.7
      Seconds

  • Question 8 - A young girl injured her arm following a fall down the steps On...

    Correct

    • A young girl injured her arm following a fall down the steps On examination, it was found that her left proximal radioulnar joint had dislocated and the annular ligament was stretched. This will make which movement extremely painful?

      Your Answer: Supination

      Explanation:

      Supination is the rotation of the forearm so that the palm of the hand faces anteriorly. This is performed by the biceps brachii and supinator of the extensor muscles of the thumb. The opposite action of moving the palm from an anterior-facing position to a posterior-facing position is called pronation. Pronation is performed by the pronator teres and pronator quadratus.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      24
      Seconds

  • Question 9 - A space defined by the teres major muscle, the teres minor muscle, long...

    Correct

    • A space defined by the teres major muscle, the teres minor muscle, long head of the triceps brachii muscle and surgical neck of the humerus contains the axillary nerve and the?

      Your Answer: Posterior circumflex humeral artery

      Explanation:

      This quadrangular space transmits the posterior circumflex humeral vessels and the axillary nerve.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      16.3
      Seconds

  • Question 10 - A 50 year old male point was diagnosed with tennis elbow that became...

    Incorrect

    • A 50 year old male point was diagnosed with tennis elbow that became worse after he started playing basket ball over the last three months. He was admitted to the orthopaedic ward to have elbow braces fitted. What type of synovial joint is the elbow joint?

      Your Answer: Bicondylar

      Correct Answer: Hinge

      Explanation:

      The elbow joint is one of the many synovial joints in the body. This joint is an example of the hinge joint as the humerus is received into the semilunar notch of the ulna and the capitulum of the humerus articulates with the fovea on the head of the radius, together acting as a hinge in one plane.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      33.5
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Anatomy (6/10) 60%
Upper Limb (6/10) 60%
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