[Anatomy] The Upper Limb quizzes – Part 3 (15 questions)

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[Anatomy] The Upper Limb quizzes – Part 3 (15 questions)
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Select the one best response to each question!

Which of the following nerves is correctly paired with its cutaneous branch?

The median nerve gives rise to a palmar cutaneous branch; the ulnar nerve as well has a palmar cutaneous branch. The radial nerve gives rise to the posterior brachial cutaneous nerve, the posterior antebrachial cutaneous nerve, the inferior lateral brachial cutaneous nerve, and a superficial branch that innervates the dorsum of the hand and the digits. The musculocutaneous nerve continues as the lateral antebrachial cutaneous nerve. The axillary nerve gives rise to the superior lateral brachial cutaneous nerve. The medial cord of the brachial plexus gives rise to the medial brachial cutaneous nerve and the medial antebrachial cutaneous nerve. The supraclavicular nerves (from C3–C4) and the intercostobrachial nerve (from T2) also contribute to the cutaneous innervation of the arm

31. Which muscle assists in extension of the forearm, resists abduction of the ulna during pronation of the forearm, and tenses the capsule of the elbow joint so that it is not pinched when the joint is extended?
(A) anconeus
(B) triceps brachii
(C) coracobrachialis
(D) brachialis
(E) biceps brachii
Which of the following is a branch of the brachial artery?
(A) anterior and posterior circumflex humeral arteries
(B) deltoid artery
(C) superior and inferior ulnar collateral arteries
(D) thoracoacromial artery
(E) anterior and posterior ulnar recurrent arteries
33. Which of the following nerves supply NO branches to the arm?
(A) musculocutaneous and median
(B) radial and ulnar
(C) median and ulnar
(D) median and radial
(E) musculocutaneous and radial
34. Which of the following nerves is correctly paired with its cutaneous branch?
(A) median nerve and medial antebrachial cutaneous nerve
(B) musculocutaneous nerve and lateral antebrachial cutaneous nerve
(C) ulnar nerve and posterior antebrachial cutaneous nerve
(D) median nerve and medial brachial cutaneous nerve
(E) radial nerve and superior lateral brachial cutaneous nerve
35. The cubital fossa does NOT contain which of the following?
(A) terminal part of the brachial artery
(B) deep accompanying veins of the arteries
(C) median nerve
(D) biceps brachii tendon
(E) ulnar nerve
36. A patient is unable to flex the arm and forearm. Where is the lesion likely to be?
(A) ventral rami of C3–C4
(B) ventral rami of C5–C6–C7
(C) dorsal rami of C6–C7–C8
(D) ventral rami of C8–T1
(E) dorsal rami of T1
37. The radial nerve innervates muscles in the extensor compartment of the forearm, but it also innervates the following flexor:
(A) brachioradialis
(B) pronator teres
(C) palmaris longus
(D) pronator quadratus
(E) palmaris longus
38. Which muscle does NOT cross the elbow joint?
(A) flexor pollicis longus
(B) pronator teres
(C) flexor carpi radialis
(D) flexor carpi ulnaris
(E) flexor digitorum superficialis
39. The ulnar nerve innervates which of the following muscles in the flexor compartment?
(A) the medial part of the flexor digitorum superficialis
(B) flexor carpi radialis
(C) pronator quadratus
(D) pronator teres
(E) the medial part of flexor digitorum profundus
40. The radial artery lies just lateral to the tendon of which muscle?
(A) pronator teres
(B) flexor carpi radialis
(C) palmaris longus
(D) flexor carpi ulnaris
(E) flexor digitorum superficialis
41. The palmaris longus tendon is a useful guide to which nerve at the wrist?
(A) anterior interosseous nerve
(B) posterior interosseous nerve
(C) median nerve
(D) ulnar nerve
(E) radial nerve
42. To pronate the forearm, which of the following must occur?
(A) The pronator quadratus initiates pronation, assisted later by the pronator teres.
(B) The pronator teres initiates pronation, assisted later by the pronator quadratus.
(C) The anconeus initiates pronation, assisted later by the pronator teres.
(D) The pronator quadratus initiates pronation, assisted later by the anconeus.
(E) The ulnar nerve must be used.
43. The extensor carpi radialis longus tendon is crossed by which two muscles?
(A) abductor pollicis longus and extensor pollicis longus
(B) extensor indicis and extensor digitorum
(C) extensor digitorum and extensor pollicis brevis
(D) abductor pollicis longus and extensor pollicis brevis
(E) extensor indicis and extensor carpi radialis brevis
44. Which of the following is true in respect to the supinator?
(A) It is innervated by the ulnar nerve.
(B) It supinates the forearm by rotating the ulna.
(C) It forms the floor of the cubital fossa along with the brachioradialis.
(D) It supinates the forearm when the forearm is already flexed.
(E) It rotates the radius to turn the palm anteriorly.
45. Which of the following does NOT take an origin from the lateral epicondyle of the humerus?
(A) extensor carpi radialis brevis
(B) extensor carpi ulnaris
(C) abductor pollicis longus
(D) supinator
(E) extensor digiti minimi

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