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MSK Final > Arm and Forearm > Flashcards

Arm and Forearm Flashcards

(67 cards)

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1
Q

Proximal attachment of biceps brachii

A

long head: supraglenoid tubercle of scapula

short head: coracoid process of scapula

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2
Q

Distal attachment of biceps brachii

A

radial tuberosity and fascia of forearm via bicipital aponeurosis

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3
Q

actions of of biceps brachii

A

supinates forearm and flexes forearm when supine; resists dislocation of shoulder (short head)

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4
Q

blood supply of biceps brachii

A

brachial artery

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5
Q

innervation of biceps brachii

A

musculotaneous nerve (C5, C6)

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6
Q

proximal attachment of coracobrachialis

A

coracoid process of scapula

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7
Q

distal attachment of coracobrachialis

A

middle 1/3 of medial humeral surface

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8
Q

actions of coracobrachialis

A

flexes and adducts arm at shoulder joint; resists dislocation of shoulder joint

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9
Q

blood supply of coracobrachialis

A

brachial artery

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10
Q

innervation of coracobrachialis

A

musculotaneous nerve (C5, C6, C7)

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11
Q

proximal attachment of brachialis

A

distal 1/2 of anterior surface of humerus

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12
Q

distal attachment of brachialis

A

coronoid process and tuberosity of ulna

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13
Q

actions of brachialis

A

flexes forearm at elbow joint

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14
Q

blood supply of brachialis

A

brachial artery

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15
Q

innervation of brachialis

A

musculocutanous nerve (C5, C6); lateral portions may receive radial nerve contributions

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16
Q

Which muscles are innervated by the radial nerve?

A

triceps brachii (long head, lateral head, medial head) and anconeus

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17
Q

proximal attachment of anconeus

A

lateral epicondyle of humerus

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18
Q

distal attachment of anconeus

A

lateral surface of olecranon; superior part of surface of ulna

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19
Q

actions of anconeus

A

assists triceps in extension of forearm and stabilizes elbow joint; also abducts ulna during pronation

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20
Q

blood supply of anconeus

A

deep brachial artery

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21
Q

innervation of anconeus

A

radial nerve (C7, C8, T1)

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22
Q

proximal attachment of triceps brachii

A

long: infraglenoid tubercle
lateral: posterior surface of humerus
medial: posterior surface of humerus, inferior radial groove

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23
Q

actions of triceps brachii

A

extends forearm at elbow joint (main); resists dislocation of shoulder joint (long head)

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24
Q

blood supply of triceps brachii

A

deep brachial artery

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25
innervation of triceps brachii
radial nerve (C6, C7, C8)
26
What are the boundaries of the cubital fossa?
lateral: brachioradialis medial: pronator teres superior: an imaginary line between medial and lateral epicondyles of humerus roof: skin, superfical and deep fascia, bicipital aponeurosis floor: supinator and brachialis
27
What are the contents of the cubital fossa?
median nerve, bifurcation of radial and ulnar arteries, brachial veins (venae comitantes), tendon of biceps brachii and bicipital aponeurosis, radial nerve (deep and superficial radial nerves)
28
proximal attachment of pronator teres
coronoid process of ulna
29
distal attachment of pronator teres
middle of lateral surface of radius
30
actions of pronator teres
pronates and flexes forearm at elbow
31
blood supply of pronator teres
anterior ulnar recurrent artery
32
innervation of pronator teres
median nerve (C6, C7)
33
proximal attachment of flexor carpi radialis
medial epicondyle of humerus
34
distal attachment of flexor carpi radialis
base of 2nd metacarpal
35
actions of flexor carpi radialis
flexes and abducts hand at wrist
36
blood supply of flexor carpi radialis
ulnar artery
37
innervation of flexor carpi radialis
median nerve (C6, C7)
38
proximal attachment of palmaris longus (can be absent)
medial epicondyle of humerus
39
distal attachment of palmaris longus (can be absent)
flexor retinaculum; continuous with palmar aponeurosis
40
actions of palmaris longus (can be absent)
flexes hand at wrist; tenses palmar aponeurosis
41
blood supply of palmaris longus (can be absent)
ulnar artery
42
innervation of palmaris longus (can be absent)
median nerve (C7, C8)
43
proximal attachment of flexor carpi ulnaris
medial epicondyle of humerus (humeral head); olecranon and posterior border of ulna (ulnar head)
44
distal attachment of flexor carpi ulnaris
pisiform, hook of hamate, 5th metacarpal
45
actions of flexor carpi ulnaris
flexes and adducts hand at wrist
46
blood supply of flexor carpi ulnaris
ulnar artery
47
innervation of flexor carpi ulnaris
ulnar nerve (C7, C8)
48
proximal attachment of flexor digitorum superficialis
medial epicondyle of humerus, superior 1/2 of anterior border of radius
49
distal attachment of flexor digitorum superficialis
shafts of middle phalanges of medial 4 digits
50
actions of flexor digitorum superficialis
flexes middle phalanges at proximal interphalangeal joint; flexes proximal phalanges at metacarpophalangeal joints
51
blood supply of flexor digitorum superficialis
ulnar artery
52
innervation of flexor digitorum superficialis
median nerve (C7, C8, T1)
53
proximal attachment of flexor digitorum profundus
proximal 3/4 of medial and anterior surfaces of ulna and interosseus membrane
54
distal attachment of flexor digitorum profundus
bases of distal phalanges of 2nd-5th fingers
55
actions of flexor digitorum profundus
flexes distal phalanges at interphalangeal joints (power grip)
56
blood supply of flexor digitorum profundus
anterior interosseus artery
57
innervation of flexor digitorum profundus
anterior interosseus branch of median n.; medial aspect - ulnar n.
58
proximal attachment of flexor pollicis longus
anterior surface of radius and interosseus membrane
59
distal attachment of flexor pollicis longus
base of distal phalanx of thumb
60
actions of flexor pollicis longus
flexes thumb
61
blood supply of flexor pollicis longus
anterior interosseus artery
62
innervation of flexor pollicis longus
median nerve via anterior interosseus nerve (C8, T1)
63
proximal attachment of pronator quadratus
distal 1/4 of anterior surface of ulna
64
distal attachment of pronator quadratus
distal 1/4 of anterior surface of radius
65
actions of pronator quadratus
pronates forearm, deep fibers bind radius and ulna together
66
blood supply of pronator quadratus
anterior interosseus artery
67
innervation of pronator quadratus
median nerve via anterior interosseus nerve (C8, T1)

MSK Final (7 decks)

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