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MSK test 2 > MSK 7 > Flashcards

MSK 7 Flashcards

(65 cards)

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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
what are the muscles of the superficial layer of the posterior forearm compartment
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
26
what are the muscles in the deep later of the posterior forearm compartment?
1. supinator 2. abductor pollicis longus 3. extensor pollicis brevis 4. extensor pollicis longus 5. extensor indicis
27
what is the fascia posteriorly over the distal ends of the radius and ulna and retains the extensor tendons?
extensor retinaculum
28
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
flexor retinaculum
29
what are the origins of the pronator teres?
- humeral head: medial epicondyle of humerus - ulnar head: coronoid process of ulna
30
what is the insertion of the pronator teres?
middle of the lateral surface of radius
31
what are the functions of the pronator teres?
1. pronation of forearm 2. (weakly) flexion of forearm
32
what is the innervation of the pronator teres?
median nerve
33
what is the pronator syndrome?
impeachment of median nerve between the two heads of the pronator teres
34
what is the origin of flexor carpi radialis?
medial epicondyle of humerus (via common flexor tendon)
35
what is the insertion of flexor carpi radialis?
base of the 2nd and 3rd metacarpals
36
what are the functions of the flexor carpi radialias?
1. flexion of the hand 2. flexion of forearm (weak) 3. abduction of hand (radial deviation)
37
what is the innervation of flexor carpi radialis?
median nerve
38
what is the origin of palmaris longus?
medial epicondyle of humerus (via common flexor tendon)
39
what is the insertions of the palmaris longus?
palmar aponeurosis and flexor retinaculum
40
what is the functions of the palmaris longus?
1. flexion of hand 2. flexion of the forearm (weak)
41
what is the innervation of the palmaris longus?
median nerve
42
what is the origin of the flexor carpi ulnaris?
humeral head: medial epicondyle of humerus (via common flexor tendon) ulnar head: 1. olecranon process of ulna 2. posterior border of ulna
43
what are the insertions of the flexor carpi ulnaris?
1. base of the 5th metacarpal 2. hook of hamate 3. pisiform
44
what are the functions of the flexor carpi ulnaris?
1. flexion of head 2. flexion of forearm (weak) 3. adduction of hand (ulnar deviation)
45
what is the innervation of the flexor carpi ulnaris?
ulnar nerve
46
what is the muscle in the intermediate layer of the anterior forearm?
flexor digitorum superficialis
47
what are the origins of the flexor digitorum superficialis?
humero-ulnar head: medial epicondyle (via common flexor tendon) and coronoid process of ulna radial head: proximal of anterior border of radius
48
what is the insertion of the flexor digitorum superficialis?
base of middle phalanges of fingers #2-5
49
what are the functions of the flexor digitorum superficialis?
1. flexion of fingers #2-5 @ MCP and PIP joints 2. flexion of hand 3. flexion of forearm (weak)
50
what is the innervation of flexor digitorum superficialis?
median nerve
51
what is special about the flexor digitorum superficialis?
goes through the carpal tunnel
52
what are the origins of the flexor digitorum profundus?
- proximal anterior and medial surface of ulna - interosseous membrane
53
what is the insertion of the flexor digitorum profundus?
base of distal phalanges of fingers #2-5
54
what are the functions of the flexor digitorum profundus?
1. flexion of fingers #2-5 @ MCP, PIP, and DIP joints 2. flexion of hand
55
what are the innervation of the flexor digitorum profundus?
median nerve for the radial half, and ulnar nerve for the ulnar half
56
what is the origin of the flexor pollicis longus?
anterior surface of the radius and interosseous membrane
57
what is the insertion of the flexor pollicis longus?
base of distal phalanx of thumb
58
what are the functions of the flexor pollicis longus?
1. flexion of thumb @ CMC, MCP, and IP joints 2. flexion of hand
59
what is the innervation of the flexor pollicis longus?
median nerve
60
does the flexor pollicis longus go through the carpal tunnel? T or F
true
61
what goes through the carpal tunnel?
flexor digitorum superficialis, flexor digitorum profundus, flexor pollicis longus, median nerve
62
what is the origin of the pronator quadratus?
anterior surface of distal 1/4 of ulna
63
what is the insertion of the pronator quadratus?
anterior surface of distal 1/4 of radius
64
what is the function of pronator quadratus?
pronation of forearm
65
what is the innervation of the pronator quadratus?
median nerve

MSK test 2 (6 decks)

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