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  • Question 1 - Which muscle would be affected most following injury to the transverse cervical artery?...

    Incorrect

    • Which muscle would be affected most following injury to the transverse cervical artery?

      Your Answer: Levator scapulae

      Correct Answer: Trapezius

      Explanation:

      The latissimus dorsi receives blood from the thoracodorsal artery, the supraspinatus receives its blood from the suprascapular artery, the levator scapulae and the rhomboids are supplied by the dorsal scapular artery and the transverse cervical artery supplies blood to the trapezius.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      27.1
      Seconds

  • Question 2 - Two boys were playing when one of them brought the forearm of the...

    Correct

    • Two boys were playing when one of them brought the forearm of the other behind his back. This resulted in a stretching of the lateral rotator of the arm. Which of the following muscles was most likely to have been involved?

      Your Answer: Infraspinatus

      Explanation:

      There are two lateral rotators of the arm, the infraspinatus and the teres minor muscles. The infraspinatus muscle receives nerve supply from C5 and C6 via the suprascapular nerve, whilst the teres minor is supplied by C5 via the axillary nerve.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      12.1
      Seconds

  • Question 3 - 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
      8.5
      Seconds

  • Question 4 - 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
      9.4
      Seconds

  • Question 5 - Regarding abduction of the digits of the hand, which of the following is...

    Incorrect

    • Regarding abduction of the digits of the hand, which of the following is correct?

      Your Answer: The palmar interosseous muscles are the sole adductors of the digits

      Correct Answer: All of the adductors of the digits take at least part of their attachments from metacarpal bones

      Explanation:

      Lying on the palmer surfaces of the metacarpal bones are four palmar interossei which are smaller than the dorsal interossei. Arising from the entire length of the metacarpal bone of one finger, is a palmar interosseous, which is inserted into the side of the base of the first phalanx and the aponeurotic expansion of the extensor digitorum communis tendon to the same finger. All the interossei are innervated by the eighth cervical nerve, through the deep palmar branch of the ulnar nerve. The palmar interossei adducts the fingers to an imaginary line drawn longitudinally through the centre of the middle finger.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      49.3
      Seconds

  • Question 6 - When you rest your elbows on a desk, what bony landmark of the...

    Correct

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

      Your 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
      8.6
      Seconds

  • Question 7 - A young man came to the emergency room after an accident. The anterior...

    Correct

    • A young man came to the emergency room after an accident. The anterior surface of his wrist was lacerated with loss of sensation over the thumb side of his palm. Which nerves have been damaged?

      Your Answer: Median

      Explanation:

      The median nerve provides cutaneous innervation to the skin of the palmar radial three and a half fingers. Also the site of injury indicates that the medial nerve may have been injured as it passes into the hand by crossing over the anterior wrist.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      31.5
      Seconds

  • Question 8 - A gymnast was admitted to hospital for investigation of a weakness in the...

    Correct

    • A gymnast was admitted to hospital for investigation of a weakness in the extension and adduction of his arm. He had a previous penetrating wound in the area of the posterior axillary fold. Which of these muscles is the likely cause?

      Your Answer: Latissimus dorsi

      Explanation:

      All the criteria of this case points towards the latissimus dorsi. This muscle is greatly involved in extension, adduction and medial rotation of the arm and forms the posterior axillary fold which in this case was injured.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      21.3
      Seconds

  • Question 9 - A drug abuser developed an infection which spread from the dorsum of the...

    Incorrect

    • A drug abuser developed an infection which spread from the dorsum of the hand to the medial side of the arm along the course of the large cutaneous vein. Which vein is involved?

      Your Answer: Cephalic

      Correct Answer: Basilic

      Explanation:

      The basilic vein is one of two veins found in the forearm, the other is the cephalic vein. These veins originate from the deep venous arch of the hand. The cephalic vein ascends along the lateral side of the forearm, and the basilic vein runs up the medial side of the forearm.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      45.1
      Seconds

  • Question 10 - Injury to the supraspinatus muscle will affect: ...

    Correct

    • Injury to the supraspinatus muscle will affect:

      Your Answer: Initiation of abduction of the humerus

      Explanation:

      This muscle arises from the medial two-thirds of the supraspinatus fossa and from the supraspinatus fascia. It is inserted into the highest impression on the greater tubercle of the humerus after passing over the upper part of the shoulder joint. It works with the deltoid to raise the arm from the side of the trunk and initiate abduction. It also assists in fixation of the head of the humerus in the glenoid cavity.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      17.3
      Seconds

  • Question 11 - 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
      14.3
      Seconds

  • Question 12 - A man came to the hospital complaining of a sensation of pins and...

    Correct

    • A man came to the hospital complaining of a sensation of pins and needles in the dorsum of the thumb and digits 1 and 2. On further examination they found that he had weakness in wrist dorsiflexion and finger extension. Which nerve do you think is injured in this case?

      Your Answer: Radial

      Explanation:

      The radial nerve can be injured in multiple sites along its course in the upper limb, and each site has its own presentation. The major complaint is wrist drop which if high above the elbow, can cause numbness of the forearm and hand. It can last for several days or weeks. The most common site of compression for the radial nerve is at the proximal forearm in the area of the supinator muscles.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      41.3
      Seconds

  • Question 13 - A 40 year old man sustained a fracture to the surgical neck of...

    Correct

    • A 40 year old man sustained a fracture to the surgical neck of his left humerus. Which of the following arteries is suspected to be injured in this case?

      Your Answer: Posterior humeral circumflex

      Explanation:

      The posterior humeral circumflex artery arises from the axillary artery and runs with the axillary nerve through the quadrangular space which is bounded laterally by the surgical neck of the humerus. After winding around the surgical neck of the humerus, it is distributed to the deltoid muscle and the shoulder joint. Thus fractures in the surgical neck of the humerus could result in an injury to this artery.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      27.5
      Seconds

  • Question 14 - A man in his sixties underwent surgery to remove a lump from his...

    Incorrect

    • A man in his sixties underwent surgery to remove a lump from his axilla. During removal, a nerve originating from the lateral cord of the brachial plexus was damaged. Which nerve is this referring to?

      Your Answer: Thoracodorsal

      Correct Answer: Lateral pectoral

      Explanation:

      The only branch of the lateral cord of brachial plexus in the options given, is the lateral pectoral nerve. It supplies the pectoralis major muscle and sends a branch to join the medial pectoral nerve forming a loop in front of the first part of the axillary artery.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      32.7
      Seconds

  • Question 15 - 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
      37.3
      Seconds

  • Question 16 - A machine worker fractured the medial epicondyle of his right humerus resulting in...

    Incorrect

    • 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: Anterior ulnar recurrent

      Correct 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
      27.5
      Seconds

  • Question 17 - Which muscle originates from the common flexor tendon of the forearm? ...

    Incorrect

    • Which muscle originates from the common flexor tendon of the forearm?

      Your Answer: Flexor digitorum profundus

      Correct Answer: Flexor digitorum superficialis

      Explanation:

      The medial epicondyle of the humerus is the site of origin of this group of muscles of the forearm. It originates from the medial epicondyle of the humerus by a common tendon. Fibres from the deep fascia of the forearm, near the elbow and septa, pass from this fascia between the muscles. These muscles include the pronator teres, palmaris longus, flexor carpi radialis, flexor carpi ulnaris and flexor digitorum superficialis.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      31.4
      Seconds

  • Question 18 - A young boy fell from a tree, sustaining an injury to the elbow...

    Incorrect

    • A young boy fell from a tree, sustaining an injury to the elbow area and damaging the nerve behind the medial epicondyle of the humerus. What is the most likely result from that injury?

      Your Answer: Abduction of the thumb

      Correct Answer: Flexion in the distal interphalangeal joint of digit 5

      Explanation:

      The nerve injured in this situation is the ulnar nerve. It passes posterior to the medial epicondyle of the humerus before going between the two heads of the flexor carpi ulnaris muscle. This nerve supplies the muscles and skin of forearm and hand. At the level of medial epicondyle, the injury will led to paralysis in flexor carpi ulnaris and the ulnar half of the flexor digitorum profundus as well as the palmar interossei and hypothenar muscles in the hand. The correct answer will be that the boy will suffer from inability to flex the distal interphalangeal joint of digit 5

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      56.2
      Seconds

  • Question 19 - A 38 year-old man falls on an outstretched hand. X-rays indicate an anterior...

    Incorrect

    • A 38 year-old man falls on an outstretched hand. X-rays indicate an anterior dislocation of one of the carpal bones. Which carpal bone is most commonly dislocated?

      Your Answer: Scaphoid

      Correct Answer: Lunate

      Explanation:

      The scaphoid bone is the most commonly fractured carpal bone and has an increased risk of avascular necrosis.

      The lunate is the most commonly dislocated carpal bone. The displaced bone may compress the median nerve in the carpal tunnel.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      18.7
      Seconds

  • Question 20 - Which best describes the suprascapular nerve? ...

    Incorrect

    • Which best describes the suprascapular nerve?

      Your Answer: It provides cutaneous innervation to the posterolateral surface of the shoulder

      Correct Answer: It contains nerve fibres from C5 and C6 spinal cord segments

      Explanation:

      The suprascapular nerve arises from the cervical spinal nerves 5 and 6 after coming together to form common trunk. This nerve supplies the supraspinatus and infraspinatus muscles giving off branches to the shoulder joint.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      21.6
      Seconds

  • Question 21 - 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
      28.6
      Seconds

  • Question 22 - The posterior cord contains nerve fibres from which of the following levels of...

    Correct

    • The posterior cord contains nerve fibres from which of the following levels of the spinal cord?

      Your Answer: C5, C6, C7, C8 and T1

      Explanation:

      THE correct answer is A. The posterior cord derives its fibres from the spinal nerves C5,C6,C7,C8,T1. This cord is formed from the fusion of the posterior divisions of the upper, lower, and middle trunks.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      9.7
      Seconds

  • Question 23 - An old man presented with atrophy of the thenar eminence despite the sensation...

    Incorrect

    • An old man presented with atrophy of the thenar eminence despite the sensation over it still being intact. What is the injured nerve in this case?

      Your Answer: Radial nerve

      Correct Answer: Median nerve

      Explanation:

      Atrophy of the thenar muscles means injury to the motor supply of these muscles. The nerve that sends innervation to it is the median nerve. But the median nerve does not provide sensory innervation to the overlying skin so sensation is spared.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      20.4
      Seconds

  • Question 24 - 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
      17.4
      Seconds

  • Question 25 - Where would you insert the needle when drawing blood from a patient's median...

    Correct

    • Where would you insert the needle when drawing blood from a patient's median cubital vein?

      Your Answer: Anterior aspect of the elbow

      Explanation:

      The correct answer is to insert it into the anterior aspect of the elbow. If you look at the venous drainage of the upper limb, you will find that there are two main veins, the basilic and the cephalic vein; the connecting branch between these two veins is the median cubital vein. and this vein passes via the cubital fossa which is on the anterior aspect of the forearm.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      16.8
      Seconds

  • Question 26 - The Carpal tunnel does NOT contain: ...

    Correct

    • The Carpal tunnel does NOT contain:

      Your Answer: Flexor carpi ulnaris

      Explanation:

      The contents of the carpal tunnel include:

      – Median nerve

      – Flexor digitorum supervicialis

      – Flexor digitorum profundus

      – Flexor policis longus

      – Flexor carpi radialis

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      20.6
      Seconds

  • Question 27 - 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
      30.8
      Seconds

  • Question 28 - After severe injury of the upper limb following an accident. The humerus is...

    Correct

    • 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: 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
      169
      Seconds

  • Question 29 - A chef, whilst preparing food, cut her thumb with a knife. She transected...

    Correct

    • A chef, whilst preparing food, cut her thumb with a knife. She transected the arteria princeps pollicis. This artery is a branch of the?

      Your Answer: Radial artery

      Explanation:

      The radial artery branches into the arteria princeps pollicis as it turns medially into the deep part of the hand. The arteria princeps pollicis is distributed to the skin and subcutaneous tissue of the thumb.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      27.3
      Seconds

  • Question 30 - The following joint has an anastomotic circulation that is provided by branches of...

    Incorrect

    • The following joint has an anastomotic circulation that is provided by branches of the brachial artery:

      Your Answer: Acromioclavicular joint

      Correct Answer: Elbow joint

      Explanation:

      The arterial anastomoses of the elbow joint is contributed by branches of the brachial artery and the Profunda brachii artery. The brachial artery gives off the superior ulnar collateral artery and the inferior collateral artery. On the other hand, the Profunda brachii gives off the radial and medial recurrent arteries.

    • This question is part of the following fields:

      • Anatomy
      • Upper Limb
      48.8
      Seconds

SESSION STATS - PERFORMANCE PER SPECIALTY

Anatomy (16/30) 53%
Upper Limb (16/30) 53%
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