UL MCQ

Question 1

1. When pushing a heavy object forward with both arms, the most active muscles are the:
   a) Latissimus dorsi
   b) Lower fibres of the trapezius
   c) Serratus anterior
   d) Biceps brachii
   e) Extensor digitorum

Answer 1

c) Serratus anterior

Question 2

2. In an injury to the upper roots of the brachial plexus, the resulting weakness will significantly affect:
   a) Elevation of the scapula
   b) Extension of the elbow
   c) Adduction of the thumb
   d) Abduction of the glenohumeral joint
   e) Extension at the interphalangeal joints

Answer 2

d) Abduction of the glenohumeral joint

Question 3

3. Compression of the median nerve in the “carpal-tunnel syndrome”:
   a) May cause complete numbness of the middle finger
   b) Occurs at the lower end of the forearm
   c) Makes it difficult to abduct the finger
   d) Could weaken opposition
   e) May result in claw hand

Answer 3

d) Could weaken opposition

Question 4

4. Supination of the forearm:
   a) Involves the humeroulnar joint
   b) Is facilitated by both the radial and musculocutaneous nerves
   c) Requires the forearm to be extended
   d) Is primarily caused by the supinator
   e) Is impaired by injury to the lower roots of the brachial plexus

Answer 4

b) Is facilitated by both the radial and musculocutaneous nerves

Question 5

5. In a fall on the outstretched hand the bones most likely to be injured at the wrist are the:
   a) Trapezium and trapezoid
   b) Triquetrum and pisiform
   c) Capitate and hamate
   d) Scaphoid and radius
   e) Ulna and lunate

Answer 5

d) Scaphoid and radius

Question 6

6. The radial pulse is best felt:
   a) In the anatomical snuff box
   b) Lateral to the flexor carpi radialis
   c) Between the Palmaris longus and flexor carpi radialis
   d) At the cubital fossa
   e) Alongside the radial nerve

Answer 6

b) Lateral to the flexor carpi radialis

Question 7

7. It is possible to locate and identify the cephalic vein in the following places except:
   a) Lateral end of the dorsal venous arch
   b) Anatomical snuff box
   c) Medial aspect of the arm
   d) Deltopectoral groove
   e) In front of the elbow

Answer 7

c) Medial aspect of the arm

Question 8

8. In an obstruction to the 2nd part of the axillary artery, collateral circulation (to bypass the obstruction) to the arm may be established between the:
   a) First and third parts of the axillary artery
   b) Lateral thoracic and subscapular arteries
   c) Subclavian artery and branches of the third part of the axillary artery
   d) Scapular anastomosis and the brachial artery
   e) Subclavian artery and the brachial artery

Answer 8

c) Subclavian artery and branches of the third part of the axillary artery
In obstruction to 2nd part of axillary artery, collat circulation is estab by scapular anastomosis, providing alternative route of blood circulation b/w subclavian and 3rd part ofaxillary artery.
The scapular anastomosis is a network formed by a number of arteries supplying the scapula, not limited to and including:
(a) Dorsal scapular artery: a branch of the transverse cervical artery, originating from the thyrocervical trunk, which came from the first part of the subclavian artery.
(b) Suprascapular artery: also a branch of the thyrocervical trunk, originating from the first part of the subclavian artery
(c) Subscapular artery: a branch of the third part of the axillary artery which supplies the subscapularis in the subscapular fossa, inferiorly till the inferior angle.
(d) Some branches of the thoracic aorta

Question 9

9. A complete claw hand with numbness over the medial aspect of the arm is consistent with the injury of:
   a) Ulnar nerve at the elbow joint
   b) Radial nerve at the axilla
   c) Both medial and ulnar nerves above the elbow joint
   d) The lowest root of the brachial plexus
   e) Complete destruction of the brachial plexus

Answer 9

d) The lowest root of the brachial plexus

Question 10

11. Injury to the lateral cord of brachial plexus is most likely to cause:
    a) Weakness of abduction
    b) Weakness of supination
    c) Wrist drop
    d) Numbness of little finger
    e) Difficulty in doing push-ups

Answer 10

b) Weakness of supination
The lateral cord carries nerve fibres from spinal roots C5 through C7. The lateral cord gives off the musculocutaneous nerve before fusing with the medial cord to give the median nerve.
*note: supinator is not affected bc it is supplied by the radial nerve, a branch of the posterior cord.

Question 11

12. A cut over the lateral side of the wrist is least likely to injure:
    a) Median nerve
    b) Abductor pollicis longus
    c) Extensor pollicis longus
    d) Radial nerve

Answer 11

a) Median nerve

Question 12

13. Abduction of the arm to the vertical position is not caused by:
    a) Levator scapulae
    b) Trapezius
    c) Deltoid
    d) Supraspinatus
    e) Serratus anterior

Answer 12

a) Levator scapulae

Question 13

14. Loss of sweating in the hand is most likely the result of damage to:
    a) Dorsal root of upper thoracic spinal nerve
    b) Sympathetic chain
    c) Greater splanchnic nerve
    d) Vagus nerve

Answer 13

b) Sympathetic chain

Question 14

15. Axillary lymph nodes are least likely to receive lymph from:
    a) Side of the neck
    b) Breast
    c) Epigastrium
    d) Scapula region
    e) Hand

Answer 14

a) Side of the neck

Question 15

10. The components not significantly involved in generating the biceps tendon reflex is:
    a) Muscle spindles in the biceps tendon
    b) Musculocutaneous nerve
    c) Selected dorsal root ganglia
    d) Axons of selected motor neurons in the spinal cord
    e) Sarcoplasmic reticulum in the biceps muscle fibres

Answer 15

a) Muscle spindles in the biceps tendon
In a typical tendon reflex, 1st step is inducing a short lengthening of the muscle by lightly tapping on the tendon. short lengthening of the muscle stimulates the muscle spindles in the BELLY of the muscle to send signals through the afferent sensory neurons, which have their cell bodies contained within the dorsal root ganglion. The signal is passed along the afferents into the dorsal horn of the spinal cord. Thereafter, the afferent sensory neurons then synapse with the efferent motor neurons, and the signal continues to travel along the axons of the motor neurons out through the ventral horn of the spinal cord. The signal eventually returns back to the muscle fibres via the relevant peripheral nerve (in the case of the biceps tendon reflex, the musculocutaneous nerve), triggering contraction of the muscle.

Question 16

16. Biceps tendon jerk is mediated by the following except:
    a) Musculocutaneous nerve
    b) Dorsal roots of C5, C6
    c) Ventral horn cells of C5, C6
    d) Medial cord
    e) Sarcoplasmic reticulum in the muscle

Answer 16

d) Medial cord

the musculocutaneous nerve is a terminal branch of the LATERAL cord of the brachial plexus.

Question 17

17. Suprascapular nerve supplies the:
    a) Subscapularis
    b) Teres minor
    c) Rhomboid minor
    d) Infraspinatus
    e) Latissimus dorsi

Answer 17

d) Infraspinatus

Question 18

18. In a supracondylar fracture, which of the following structures is most likely to be injured:
    a) Radial nerve
    b) Median nerve
    c) Ulnar nerve
    d) Circumflex artery
    e) Axillary nerve

Answer 18

b) Median nerve

Question 19

19. Reposition of the thumb is accomplished by all the following except:
    a) Abductor pollicis longus
    b) Adductor pollicis
    c) Extensor pollicis brevis
    d) Extensor pollicis longus

Answer 19

b) Adductor pollicis

Question 20

20. In the upper extremity, a pulse may be palpated at all of the following locations except:
    a) In the arm against the humerus just distal to the pectoralis minor
    b) In the cubital fossa medial to the biceps brachii tendon
    c) In the wrist at the radial side of the tendon of the flexor carpi radialis muscle
    d) At the wrist at the radial side of the pisiform bone
    e) In the hand between the tendons of the extensor pollicis brevis and abductor pollicis longus muscles

Answer 20

e) In the hand between the tendons of the extensor pollicis brevis and abductor pollicis longus muscles

Question 21

21. Which of the following statements describing the pectoralis minor muscle is correct:
    a) It attaches to the acromion process of the scapula
    b) It crosses anterior to the cords of the brachial plexus
    c) It is an adductor and medial rotator of the humerus
    d) It is innervated by the middle subscapular (thoracodorsal) nerve
    e) It originates deep to the axillary artery

Answer 21

b) It crosses anterior to the cords of the brachial plexus

Question 22

22. Which of the following statements pertaining to the cephalic vein are correct:
    a) It accompanies the brachial artery
    b) It drains the ulnar side of the hand
    c) It is suitable for venipuncture anterior to the medial epicondyle
    d) It lies in the groove between the deltoid and pectoralis major muscles

Answer 22

d) It lies in the groove between the deltoid and pectoralis major muscles

Question 23

23. The ulnar nerve innervates which of the following muscles of the thumb:
    a) Abductor pollicis brevis
    b) Abductor pollicis longus
    c) Deep head of the flexor pollicis brevis
    d) Opponens pollicis
    e) Superficial head of the flexor pollicis brevis

Answer 23

c) Deep head of the flexor pollicis brevis

take note!

Question 24

24. Following complete severance of the musculocutaneous nerve, some weak flexion of the elbow is possible through contraction of muscles not innervated by that nerve. All of the following muscles also flex the elbow except the:
    a) Brachioradialis
    b) Flexor carpi radialis
    c) Flexor carpi ulnaris
    d) Ulnar head of the pronator teres

Answer 24

d) Ulnar head of the pronator teres

Question 25

25. With the upper limb adducted, hanging by the side and holding a heavy suitcase, support at the glenohumeral joint to prevent downward displacement is provided by all of the following except the: a) Coracoacromial ligament b) Coracohumeral ligament c) Short head of the biceps brachii muscle d) Supraspinatus muscle

Answer 25

a) Coracoacromial ligament In order to prevent downward displacement, the structure, be it muscle or ligament; have to attach to proximally to the scapula and distally to a distal part of the upper limb.

Question 26

26. Which of the following statements describing the lunate bone is correct: a) It articulates maximally with the fibrocartilage disk during adduction b) It is a component of the carpometacarpal joint c) It can compress the median nerve if displaced anteriorly d) It provides an attachment for the transverse carpal ligament

Answer 26

c) It can compress the median nerve if displaced anteriorly

Question 27

27. Which of the following muscles originates from the medial epicondyle of the humerus: a) Brachioradialis b) Extensor carpi ulnaris c) Flexor carpi radialis d) Flexor pollicis longus e) Supinator

Answer 27

c) Flexor carpi radialis

Question 28

28. All of the following statements concerning the veins of the cubital region are true except: a) At the level of the midaxilla, the basilic vein is joined by the cephalic vein to form the axillary vein b) The basilic vein runs along the medial aspect of the forearm c) The cephalic vein originates on the radial side of the dorsum of the hand d) The median cubital vein links the cephalic and basilic veins in the cubital fossa e) The median cubital vein is separated from the brachial artery by the bicipital aponeurosis

Answer 28

a) At the level of the midaxilla, the basilic vein is joined by the cephalic vein to form the axillary vein At the level of the mid-axilla, the basilic vein joins with the venae commitantes of the brachial artery (sometimes also known as brachial veins) and the axillary artery to form the axillary vein. The cephalic vein courses on the lateral side of the upper limb to drain into the terminal portion of the cephalic vein through the deltopectoral groove, which is superior to the mid-axilla level.

Question 29

29. The distal attachment (insertion) of the triceps brachii muscle is: a) Coronoid process of the ulna b) Olecranon process of the ulna c) Styloid process of the ulna d) Radial notch of ulnar e) Ulnar tuberosity

Answer 29

b) Olecranon process of the ulna

Question 30

30. Most of the muscles that act on the shoulder girdle and upper limb joints are supplied by branches of the brachial plexus. Which of the following is not: a) Trapezius b) Teres minor c) Latissimus dorsi d) Rhomboid major e) Levator scapulae

Answer 30

a) Trapezius

Question 31

31. Increasing muscle mass and tone is the aim of many people who work out at the gym. This is done by contracting the muscle against resistance. If you want to increase the muscle mass of the latissimus dorsi muscle, which of the following actions would you be most likely to perform: a) Depression of the scapula b) Abduction of the arm c) Extension of the arm d) Flexion of the arm e) Lateral rotation of the arm

Answer 31

c) Extension of the arm latissimus dorsi extend, adduct and internally rotate the arm. *since also originates from the inferior angle of the scapula, it can also, to a lesser degree, depress scapula. but if one wants to work the muscle, a larger motion like extension of the arm would definitely be preferable.

Question 32

32. The true statement about the posterior compartment of the arm is: a) It receives its motor supply from the median nerve b) It contains the profunda brachii artery and radial nerve c) It contains a single elbow flexor d) Its major artery is the brachial artery e) It contains the ulnar nerve in its distal part

Answer 32

b) It contains the profunda brachii artery and radial nerve

Question 33

33. The long head of the biceps brachii muscle arises from the: a) Infraglenoid tubercle b) Acromion process c) Coracoid process d) Clavicle e) Supraglenoid tubercle

Answer 33

e) Supraglenoid tubercle

Question 34

34. The major function of the muscles in the anterior compartment of the forearm is: a) Abduction b) Flexion c) Adduction d) Medial rotation e) Lateral rotation

Answer 34

b) Flexion

Question 35

37. A structure found in the deltopectoral groove is the: a) Cephalic vein b) Basilic vein c) Brachial vein d) Radial vein e) Musculocutaneous nerve

Answer 35

a) Cephalic vein

Question 36

38. In the cubital fossa, the median cubital vein is frequently used for venipuncture. This vein is separated from the underlying neurovascular structures by the: a) Investing fascia of the brachialis muscle b) Crural fascia c) Bicipital aponeurosis d) Anconeus muscle e) Tendon of the biceps brachialis muscle

Answer 36

c) Bicipital aponeurosis

Question 37

39. Which of these structures passes deep to the flexor retinaculum at the wrist: a) Tendon of the Palmaris longus b) Ulnar artery c) Median nerve d) Palmar branch of the ulnar nerve e) Radial artery

Answer 37

c) Median nerve

Question 38

40. If the dorsal rootlets of T4 are cut (dorsal rhizotomy), there will be a loss of sensation at the level of the: a) Neck b) Clavicle c) Nipple d) Umbilicus

Answer 38

c) Nipple

Question 39

A 52-year-old man was brought to the emergency room after being found in the park where he had apparently lain overnight after a fall. He complained of severe pain in the left arm. Physical examination suggested a broken humerus, which was confirmed radiologically. The patient was able to extend the forearm at the elbow, but supination appeared somewhat weak; the hand grasp was weak when compared with the uninjured arm. Neurologic examination revealed an inability to extend the wrist ("wrist drop"). Since these findings pointing to apparent nerve damage, the patient was scheduled for a surgical reduction of the fracture. 41. The observations that extension at the elbow appeared normal, but supination of the forearm weak, warrants localization of the injured nerve to the: a) Posterior division of the brachial plexus b) Posterior cord of the brachial plexus in the axilla c) Radial nerve at the distal third of the humerus d) Radial nerve in the vicinity of the head of the radius e) Radial nerve in the mid-forearm

Answer 39

c) Radial nerve at the distal third of the humerus •Supination appeared weak – nerve supply to the supinator muscle is probably affected as well, which suggests lesion of the radial nerve possibly in the arm. •Extension of the forearm at the elbow joint remained unaffected – nerve supply to the triceps brachii muscle is not affected and lesion of the nerve is likely distal to the radial groove.

Question 40

A 52-year-old man was brought to the emergency room after being found in the park where he had apparently lain overnight after a fall. He complained of severe pain in the left arm. Physical examination suggested a broken humerus, which was confirmed radiologically. The patient was able to extend the forearm at the elbow, but supination appeared somewhat weak; the hand grasp was weak when compared with the uninjured arm. Neurologic examination revealed an inability to extend the wrist ("wrist drop"). Since these findings pointing to apparent nerve damage, the patient was scheduled for a surgical reduction of the fracture. 42. In this patient, paralysis of the supinator muscle only slightly affects the ability to supinate due to the unimpaired action of the: a) Pronator teres b) Brachioradialis c) Pronator quadratus d) Biceps brachii e) Triceps brachii

Answer 40

d) Biceps brachii

Question 41

43. The thumb action that is totally affected by radial nerve trauma is: a) Abduction b) Adduction c) Extension d) Flexion e) Opposition

Answer 41

c) Extension Opposition, abduction and flexion of the thumb are mediated by muscles innervated by the median nerve. Adduction of the thumb is mediated by adductor pollicis, innervated by the ulnar nerve.

Question 42

45. The extensor expansion of the fingers is formed by the tendon of the: a) Extensor carpi radialis longus b) Extensor pollicis longus c) Extensor digitorum d) Extensor pollicis brevis e) Interossei

Answer 42

c) Extensor digitorum

Question 43

46. Which of the following muscles is innervated by the ulnar nerve: a) Flexor pollicis longus b) Extensor pollicis longus c) Abductor pollicis brevis d) Adductor pollicis e) Opponens pollicis

Answer 43

d) Adductor pollicis

Question 44

47. If you slide a piece of paper between a patient's fingers, then ask the patient to hold onto the paper when you try to pull it from the fingers, and the patient is unable to perform this action, which nerve is suspected to be non-functional: a) Radial nerve b) Median recurrent nerve c) Ulnar nerve d) Deep radial nerve e) Superficial radial nerve

Answer 44

c) Ulnar nerve

Question 45

48. Which of the following muscles does not rotate the arm medially (or internally): a) Subscapularis b) Supraspinatus c) Latissimus dorsi d) Pectoralis major e) Anterior fibres of deltoid

Answer 45

b) Supraspinatus

Question 46

49. Damage to the coracobrachialis muscle and its nerve supply would weaken which motion of the arm and forearm? a) Extension b) Rotation c) Flexion d) Supination e) Abduction

Answer 46

c) Flexion

Question 47

53. The uppermost part of the rotator cuff of the shoulder is the tendon of the: a) Deltoid b) Teres minor c) Teres major d) Subscapularis e) Supraspinatus

Answer 47

e) Supraspinatus

Question 48

54. Which of the following muscles is a lateral rotator of the arm: a) Infraspinatus b) Subscapularis c) Latissimus dorsi d) Teres major e) Anterior fibres of deltoid

Answer 48

a) Infraspinatus

Question 49

55. Which of the following wrist bones is found in the proximal row: a) Trapezium b) Trapezoid c) Capitate d) Hamate e) Scaphoid

Answer 49

e) Scaphoid

Question 50

56. Which of these muscles of the forearm has a double innervation: a) Flexor digitorum profundus b) Flexor digitorum superficialis c) Pronator teres d) Flexor pollicis longus e) Pronator quadratus

Answer 50

a) Flexor digitorum profundus

Question 51

57. The muscle that forms the bulk of the anterior axillary fold is the: a) Latissimus dorsi b) Pectoralis major c) Subscapularis d) Teres minor e) Teres major

Answer 51

b) Pectoralis major

Question 52

58. The infraglenoid tubercle serves as an attachment for the: a) Long head of biceps b) Long head of triceps c) Medial head of triceps d) Coracobrachialis e) Subscapularis

Answer 52

b) Long head of triceps

Question 53

59. The ulnar nerve is a branch of which cord of the brachial plexus: a) Medial b) Lateral c) Posterior

Answer 53

a) Medial

Question 54

60. Muscles of the hypothenar eminence are innervated by the: a) Median nerve b) Ulnar nerve c) Radial nerve d) Median and radial nerves e) Median and ulnar nerves

Answer 54

b) Ulnar nerve

Question 55

61. Numbness to the skin on the lateral half of the palm of the hand would be caused by a lesion to which nerve: a) Ulnar b) Radial c) Median d) Superficial radial e) Anterior interosseous

Answer 55

c) Median

Question 56

62. The nerve most likely to be injured in fractures of the medial epicondyle is the: a) Radial nerve b) Axillary nerve c) Ulnar nerve d) Median nerve e) Musculocutaneous

Answer 56

c) Ulnar nerve

Question 57

63. Which nerve is probably damaged if a patient cannot abduct the arm beyond 25 degrees: a) Axillary nerve b) Radial nerve c) Musculocutaneous nerve d) Median nerve e) Ulnar nerve

Answer 57

a) Axillary nerve

Question 58

65. The middle trunk of the brachial plexus is formed by anterior rami of which spinal cord segments: a) C7 b) C6 and C7 c) C6 d) C5 and C6 e) C7 and T1

Answer 58

a) C7

Question 59

66. Loss of pronation of the hand suggests a lesion of the: a) Median nerve b) Radial nerve c) Ulnar nerve d) Intercostobrachial nerve e) Musculocutaneous nerve

Answer 59

a) Median nerve

Question 60

67. After some time, when a motor nerve to a muscle is sectioned, the muscles will atrophy (get smaller). If you notice that the thenar muscles are atrophied, which nerve would you suppose has been injured: a) Musculocutaneous nerve b) Ulnar nerve c) Radial nerve d) Median nerve e) Thoracodorsal nerve

Answer 60

d) Median nerve

Question 61

68. A physical sign known as "winged scapula" suggests the loss of function to which of the following muscles: a) Rhomboid major b) Levator scapulae c) Latissimus dorsi d) Serratus anterior e) Trapezius

Answer 61

d) Serratus anterior helps to protract the scapula and keeps the scapula pressed against the thorax. Possible causes may be weakness of serratus anterior due to some form of myopathy or lesion or impingement of long thoracic nerve which innervates it.

Question 62

69. If a tumor grows into the quadrangular space of the axillary region, which structures would be in danger: a) Anterior humeral circumflex artery and axillary nerve b) Posterior humeral circumflex artery and radial nerve c) Posterior humeral circumflex artery and axillary nerve d) Radial nerve and profunda brachii artery e) Profunda brachii artery and axillary nerve

Answer 62

c) Posterior humeral circumflex artery and axillary nerve

Question 63

70. The medial wall of the axilla is formed by which of the following muscles: a) Teres major b) Serratus anterior c) Pectoralis major d) Subscapularis e) Pectoralis minor

Answer 63

b) Serratus anterior

Question 64

71. A branch of the axillary artery is the: a) Costocervical arterial branch b) Vertebral arterial branch c) Dorsal scapular arterial branch d) Suprascapular arterial branch e) Subscapular arterial branch

Answer 64

e) Subscapular arterial branch

Question 65

73. The lateral boundary of the cubital fossa is formed by the: a) Flexor carpi radialis muscle b) Tendon of the biceps muscle c) Brachialis muscle d) Brachioradialis muscle e) Pronator teres muscle

Answer 65

d) Brachioradialis muscle

Question 66

74. Which artery accompanies the radial nerve to supply the posterior compartment of the arm: a) Axillary artery b) Brachial artery c) Ulnar artery d) Profunda brachii e) Radial artery

Answer 66

d) Profunda brachii

Question 67

75. The artery that may be palpated deep in the "anatomical snuff box" is the: a) Superficial ulnar artery b) Posterior interosseous artery c) Cephalic artery d) Radial artery e) Deep ulnar artery

Answer 67

d) Radial artery

Question 68

76. All of these arteries may contribute to the anastomoses around the scapula except the: a) Subscapular b) Transverse cervical c) Suprascapular d) Intercostal e) Lateral thoracic

Answer 68

e) Lateral thoracic

Question 69

77. When taking the blood pressure, the stethoscope is usually placed on which artery: a) Ulnar artery b) Profunda brachii c) Axillary artery d) Brachial artery e) Radial artery

Answer 69

d) Brachial artery

Question 70

78. The superficial vein that runs up the ulnar side of the upper limb is the: a) Radial vein b) Median forearm vein c) Axillary vein d) Cephalic vein e) Basilic vein

Answer 70

e) Basilic vein

Question 71

79. The deep palmar arterial arch is formed primarily by the: a) Deep radial artery b) Superficial radial artery c) Ulnar artery d) Anterior interosseous artery e) Posterior interosseous artery

Answer 71

a) Deep radial artery

Question 72

80. clavicle fractured at junction of the middle and distal thirds. proximal end has been pulled upward. Which of the following muscles is responsible for this: a) Anterior deltoid fibres b) Trapezius c) Subclavius d) Sternocleidomastoid e) Pectoralis major

Answer 72

d) Sternocleidomastoid

Question 73

82. Which of the following muscles does not extend the wrist: a) Extensor carpi radialis longus b) Extensor carpi radialis brevis c) Extensor carpi ulnaris d) Extensor digitorum e) Brachioradialis

Answer 73

e) Brachioradialis

Question 74

83. Which of the following nerves sends branches to the muscles of the anterior arm: a) Median nerve b) Ulnar nerve c) Dorsal scapular nerve d) Musculocutaneous nerve e) Long thoracic nerve

Answer 74

d) Musculocutaneous nerve

Question 75

84. Abduction of the thumb is when it is moved: a) Laterally from the palm b) At right angles to the palmar surface c) Along side the index finger d) Straight across the palm e) None of the above

Answer 75

b) At right angles to the palmar surface

Question 76

85. Which of the following statements is true for the pectoralis major muscle: a) It arises from the humerus b) It inserts into the bony ribs c) It abducts the arm d) It is innervated by the median nerve e) None of the above.

Answer 76

e) None of the above.

Question 77

86. The nerve most likely to be traumatized with a fracture of the surgical neck of the humerus is the: a) Median nerve b) Axillary nerve c) Radial nerve d) Ulnar nerve e) Profunda brachii

Answer 77

b) Axillary nerve

Question 78

87. With an injury to the right upper trunk of the brachial plexus (Erb Duchenne paralysis), the patient's right upper extremity would be: a) Abducted b) Extended c) Medially rotated d) Laterally rotated e) Flexed

Answer 78

c) Medially rotated

Question 79

88. At the wrist, the long slender tendon of which muscle serves as a guide to the median nerve, which is deep and lateral to it: a) Flexor carpi radialis b) Flexor carpi ulnaris c) Flexor digitorum superficialis d) Palmaris longus e) Flexor digitorum profundus

Answer 79

d) Palmaris longus

Question 80

89. Which joint serves as the only bony attachment of the superior limb to the axial skeleton: a) Glenohumeral joint b) Acromioclavicular joint c) Scapulothoracic joint d) Sternoclavicular joint e) Costoclavicular joint

Answer 80

d) Sternoclavicular joint

Question 81

90. The only rotator cuff muscle that does not contribute to the rotation of the arm is the: a) Teres minor b) Infraspinatus c) Supraspinatus d) Subscapularis

Answer 81

c) Supraspinatus

Question 82

91. The dermatome of the thumb is innervated by nervous elements arising from which spinal cord segment: a) C5 b) C6 c) C7 d) C8 e) T1

Answer 82

b) C6

Question 83

92. A large muscle that arises from two head flexes and medially rotates the arm. It is innervated by nerves arising from different cords of the brachial plexus. This is the: a) Latissimus dorsi b) Trapezius c) Deltoid d) Subscapularis e) Pectoralis major

Answer 83

e) Pectoralis major

Question 84

93. Loss of opposition of the thumb is a symptom associated with lesion of which nerve: a) Radial nerve b) Ulnar nerve c) Musculocutaneous nerve d) Median nerve e) Posterior interosseous nerve

Answer 84

d) Median nerve

Question 85

94. Which carpal bone articulates with the radius: a) Trapezoid b) Scaphoid c) Hamate d) Capitate e) Trapezium

Answer 85

b) Scaphoid

Question 86

95. All of the following bony landmarks are visible on a skeleton when viewed directly from behind (posterior view), except the: a) Medial epicondyle b) Greater tubercle c) Spiral groove d) Lesser tubercle e) Olecranon process

Answer 86

d) Lesser tubercle

Question 87

96. Inability to flex the distal phalanx of the middle finger indicates injury to which of these muscles: a) Lumbrical b) Dorsal interosseous c) Flexor digitorum superficialis d) Flexor digitorum profundus e) Palmar interosseous

Answer 87

d) Flexor digitorum profundus

Question 88

97. The muscle attached to the whole length of the scapular spine is the: a) Trapezius b) Serratus anterior c) Rhomboid major d) Levator Scapulae e) Infraspinatus

Answer 88

a) Trapezius

Question 89

99. All of the following muscles attach to the medial border of the scapula, except the: a) Levator scapulae b) Rhomboid major c) Teres major d) Serratus anterior e) Rhomboid minor

Answer 89

c) Teres major

Question 90

100. Which nerve-artery pair do not run together: a) Radial nerve, profunda brachii artery b) Axillary nerve, posterior humeral circumflex artery c) Ulnar nerve, superior ulnar collateral artery d) Median nerve, posterior interosseous artery e) Anterior interosseous nerve, anterior interosseous artery

Answer 90

d) Median nerve, posterior interosseous artery

Question 91

101. nerve likely injured w: Fracture of the medial epicondyle of the humerus

Answer 91

ulnar nerve

Question 92

nerve likely injured w: 102. Fracture of the surgical neck of the humerus

Answer 92

axillary nerve

Question 93

nerve likely injured w: 103. Mid-shaft humeral fracture

Answer 93

radial nerve

Question 94

nerve likely injured w: 104. Anterior dislocation of the lunate

Answer 94

median nerve

Question 95

109. The four chief bony attachments of the flexor retinaculum are: a) Hamate, pisiform, trapezium, scaphoid b) Hamate, capitate, trapezoid, scaphoid c) Lunate, hamate, capitate, scaphoid d) Lunate, pisiform, trapezoid, hamate e) Trapezium, trapezoid, capitate, hamate

Answer 95

a) Hamate, pisiform, trapezium, scaphoid