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MSK test 2 > MSK 7 > Flashcards

MSK 7 Flashcards

1
Q

the arm is divided into anterior and posterior compartments by extension of deep fascia called the…

A

medial and lateral intermuscular septae

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2
Q

the anterior or flexor compartment of the arm is innervated by what nerve?

A

musculocutaneous nerve

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3
Q

the posterior or extensor compartment of the arm is occupied by the extensor muscle and is innervated by what nerve?

A

radial nerve

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4
Q

what is the origin of the biceps brachii?

A

short head: coracoid process
long head: supraglenoid tubercle of scapula

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5
Q

what is the insertion of the biceps brachii?

A

radial tuberosity and fascia of forearm via bicipital aponeurosis

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6
Q

what are the function of the biceps brachii?

A
  1. flexion of the forearm
  2. supination of the forearm
  3. flexion of the arm
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7
Q

what is the innervation of biceps brachii?

A

musculocutaneous nerve

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8
Q

what is the origin of coracobrachialis?

A

coracoid process of scapula

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9
Q

what is the insertion of the coracobrachialis?

A

middle third of the medial surface of humerus

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10
Q

what are the functions of coracobrachialis?

A
  1. flexion of the arm
  2. adduction of the arm (horizontal adduction)
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11
Q

what is the innervation of the coracobrachialis?

A

musculocutaneous nerve

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12
Q

what is the origin of the brachialis?

A

distal half of the anterior surface of humerus

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13
Q

what is the insertion of the brachialis?

A
  • ulnar tuberosity
  • coronoid process of ulna
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14
Q

what is the function of brachialis?

A

flexion of the forearm

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15
Q

what is the innervation of the brachialis?

A

musculocutaneous nerve

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16
Q

what are the origins of the triceps brachii?

A

long head: infraglenoid tubercle
lateral head: lateral, posterior humerus (superior to radial groove)
medial head: posterior surface of humerus (inferior to radial groove)

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17
Q

what is insertion of the triceps brachii?

A

olecranon process of ulna

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18
Q

what are the functions of the triceps brachii?

A
  1. extension of the forearm
  2. extension of the arm (long head)
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19
Q

what is the innervation of the triceps brachii?

A

radial nerve

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20
Q

all the muscles of the anterior forearm compartment are innervated by the ?, except one and a half muscles (?), which are innervated by the ?

A

median nerve, flexor carpi ulnaris and medial half of the flexor digitorum profundus), ulnar nerve

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21
Q

all muscles of the posterior forearm compartment are innervated by the ?

A

radial nerve

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22
Q

what are the muscles in the superficial layer of the anterior forearm?

A
  • pronator teres
  • flexor carpi radialis
  • palmaris longus
  • flexor carpi ulnaris
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23
Q

what is the muscle in the intermediate layer of the anterior forearm?

A

flexor digitorum superficialis (FDS)

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24
Q

what are the deep layer of the anterior forearm?

A
  • flexor digitorum profundus (FDP)
  • flexor pollicis longus (FPL)
  • pronator quadratus (PQ)
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25
Q

what are the muscles of the superficial layer of the posterior forearm compartment

A
  1. bracioradialis
  2. extensor carpi radialis longus
  3. extensor carpi radialis brevis
  4. extensor digitorum
  5. extensor digiti minimi
  6. extensor carpi ulnaris
  7. anconeus
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26
Q

what are the muscles in the deep later of the posterior forearm compartment?

A
  1. supinator
  2. abductor pollicis longus
  3. extensor pollicis brevis
  4. extensor pollicis longus
  5. extensor indicis
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27
Q

what is the fascia posteriorly over the distal ends of the radius and ulna and retains the extensor tendons?

A

extensor retinaculum

28
Q

what is the fascia anteriorly that converts the anterior concavity of the carpus into a carpal tunnel through which the flexor tendons and median nerve pass

A

flexor retinaculum

29
Q

what are the origins of the pronator teres?

A
  • humeral head: medial epicondyle of humerus
  • ulnar head: coronoid process of ulna
30
Q

what is the insertion of the pronator teres?

A

middle of the lateral surface of radius

31
Q

what are the functions of the pronator teres?

A
  1. pronation of forearm
  2. (weakly) flexion of forearm
32
Q

what is the innervation of the pronator teres?

A

median nerve

33
Q

what is the pronator syndrome?

A

impeachment of median nerve between the two heads of the pronator teres

34
Q

what is the origin of flexor carpi radialis?

A

medial epicondyle of humerus (via common flexor tendon)

35
Q

what is the insertion of flexor carpi radialis?

A

base of the 2nd and 3rd metacarpals

36
Q

what are the functions of the flexor carpi radialias?

A
  1. flexion of the hand
  2. flexion of forearm (weak)
  3. abduction of hand (radial deviation)
37
Q

what is the innervation of flexor carpi radialis?

A

median nerve

38
Q

what is the origin of palmaris longus?

A

medial epicondyle of humerus (via common flexor tendon)

39
Q

what is the insertions of the palmaris longus?

A

palmar aponeurosis and flexor retinaculum

40
Q

what is the functions of the palmaris longus?

A
  1. flexion of hand
  2. flexion of the forearm (weak)
41
Q

what is the innervation of the palmaris longus?

A

median nerve

42
Q

what is the origin of the flexor carpi ulnaris?

A

humeral head: medial epicondyle of humerus (via common flexor tendon)
ulnar head:
1. olecranon process of ulna
2. posterior border of ulna

43
Q

what are the insertions of the flexor carpi ulnaris?

A
  1. base of the 5th metacarpal
  2. hook of hamate
  3. pisiform
44
Q

what are the functions of the flexor carpi ulnaris?

A
  1. flexion of head
  2. flexion of forearm (weak)
  3. adduction of hand (ulnar deviation)
45
Q

what is the innervation of the flexor carpi ulnaris?

A

ulnar nerve

46
Q

what is the muscle in the intermediate layer of the anterior forearm?

A

flexor digitorum superficialis

47
Q

what are the origins of the flexor digitorum superficialis?

A

humero-ulnar head: medial epicondyle (via common flexor tendon) and coronoid process of ulna
radial head: proximal of anterior border of radius

48
Q

what is the insertion of the flexor digitorum superficialis?

A

base of middle phalanges of fingers #2-5

49
Q

what are the functions of the flexor digitorum superficialis?

A
  1. flexion of fingers #2-5 @ MCP and PIP joints
  2. flexion of hand
  3. flexion of forearm (weak)
50
Q

what is the innervation of flexor digitorum superficialis?

A

median nerve

51
Q

what is special about the flexor digitorum superficialis?

A

goes through the carpal tunnel

52
Q

what are the origins of the flexor digitorum profundus?

A
  • proximal anterior and medial surface of ulna
  • interosseous membrane
53
Q

what is the insertion of the flexor digitorum profundus?

A

base of distal phalanges of fingers #2-5

54
Q

what are the functions of the flexor digitorum profundus?

A
  1. flexion of fingers #2-5 @ MCP, PIP, and DIP joints
  2. flexion of hand
55
Q

what are the innervation of the flexor digitorum profundus?

A

median nerve for the radial half, and ulnar nerve for the ulnar half

56
Q

what is the origin of the flexor pollicis longus?

A

anterior surface of the radius and interosseous membrane

57
Q

what is the insertion of the flexor pollicis longus?

A

base of distal phalanx of thumb

58
Q

what are the functions of the flexor pollicis longus?

A
  1. flexion of thumb @ CMC, MCP, and IP joints
  2. flexion of hand
59
Q

what is the innervation of the flexor pollicis longus?

A

median nerve

60
Q

does the flexor pollicis longus go through the carpal tunnel? T or F

A

true

61
Q

what goes through the carpal tunnel?

A

flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus, median nerve

62
Q

what is the origin of the pronator quadratus?

A

anterior surface of distal 1/4 of ulna

63
Q

what is the insertion of the pronator quadratus?

A

anterior surface of distal 1/4 of radius

64
Q

what is the function of pronator quadratus?

A

pronation of forearm

65
Q

what is the innervation of the pronator quadratus?

A

median nerve

MSK test 2 (6 decks)

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