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Functional Anatomy > Upper Extremity Muscles > Flashcards

Upper Extremity Muscles Flashcards

1
Q

supraspinatus prox attch

A

medial 2/3 of supraspinous fossa & fascia

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2
Q

pectoralis major distal attach

A

lateral lip of intertubercular groove of humerus

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3
Q

pectoralis major axn

A

clavicular head: flexion, adduction of humerus
sternal: adduct and internal rotation of humerus

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4
Q

Pectoralis Major prox attach

A

clavicular head—ant surface of med 1/2 of clavicle
sternocostal head— ant surface of sternum & first 6 costal cartilages & aponeurosis of external oblique

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5
Q

Pectoralis Minor prox attach

A

ant surface of ext surface of ribs 3-5 (near costal cartilages)

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6
Q

Subclavius prox attach

A

junction of first rib and costal cartilage

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7
Q

Serratus Anterior prox attach

A

external surfaces of upper 8 ribs

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8
Q

Rhomboid Major prox attach

A

spines and supraspinous ligaments of TV2-5

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9
Q

Rhomboid Minor prox attach

A

lower portion of ligamentum nuchae, CV7 and TV1 spines

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10
Q

Levator Scapulae prox attach

A

posterior tubercles of trans. Processes of CV1-CV4

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11
Q

Subscapularis prox attach

A

subscap fossa

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12
Q

supraspinatus distal attach

A

superior facet of greater tubercle of humerus (blends with capsule)

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13
Q

supraspinatus axn

A

abduction (esp. in empty can)
holds head in of humerus in glenoid

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14
Q

supraspinatus innervation

A

suprascapular n. C4,5,6

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15
Q

infraspinatus prox attach

A

medial 2/3 of infraspinous fossa, lower surface scapular spine

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16
Q

infraspinatus distal attach

A

middle facet of greater tubercle of humerus (blends with capsule)

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17
Q

infraspinatus axn

A

ER of humerus
holds head of humerus in glenoid

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18
Q

infraspinatus innervation

A

suprascapular C5,6

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19
Q

teres minor prox attach

A

from lateral margin of infraspinous fossa

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20
Q

teres minor distal attach

A

lowest facet on greater tubercle of humerus and area just distal

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21
Q

teres minor axn

A

ER of humerus
holds head of humerus in glenoid

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22
Q

teres minor innervation

A

axillary (C5,6)

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23
Q

teres major prox attach

A

dorsal surface of scap near inferior angle

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24
Q

teres major distal attach

A

medial lip of humeral inter tubercular groove (posterior to lat dorsi tendon)

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25
Q

teres major axn

A

ext, adduction, IR of humerus

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26
Q

teres major innervation

A

lower subscapular (C5,6)

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27
Q

trapezius prox attach

A

upper: ligamentum nuchae, superior nuchal line, & ext protuberance of occipital bone
middle: CV7 spine, TV1,2 spinous processes
lower: supraspinous ligaments of all thoracic vertebrae

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28
Q

trapezius distal attach

A

upper: lateral 1/3 of clavicle
middle: middle acromion and spine of scapula
lower: tubercle of crest of scapula

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29
Q

trapezius axn

A

upper: upward rotation w/ lower, elevation, retract/add scapula
middle: retract and adduct scap
lower: upward rotation with upper, depression, retract and adduct scap

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30
Q

trapezius innervation

A

cranial nerve XI (spinal accessory; motor)
C3,4 ventral rami (proprioception and pain)

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31
Q

pectoralis major innervation

A

medial (C8,T1) and lateral pectoral (C5,6,7)

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32
Q

pectoralis minor distal attach

A

upper surface of coracoid process

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33
Q

pectoralis minor axn

A

stabilize scap, brings it inferiority and anteriorly against thoracic wall, depresses tip of shoulder

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34
Q

pectoralis minor innervation

A

medial (C8, T1) and lateral pectoral (C5,6,7)

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35
Q

subclavius distal attach

A

inferior surface of middle 1/3 of clavicle

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36
Q

subclavius axn

A

anchors clavicle, depresses it

37
Q

subclavius innervation

A

n. To subclavius (C5,6; off superior trunk***)

38
Q

serratus anterior distal attach

A

costal surface of scapula at superior angle, medial border, inferior angle

39
Q

serratus anterior axn

A

protraction, abd, upward rotation of scap; stabilizes against thorax (for delt on humerus)

40
Q

serratus anterior innervation

A

Long thoracic (C5,6,7 ***directly off ventral rami

41
Q

rhomboid major distal attach

A

medial border of scap at and below spine

42
Q

rhomboid major axn

A

retract/adduct scap, downward rotation of scap, elevation

43
Q

rhomboid major innervation

A

dorsal scapular (C4,C5; directly off ventral rami)

44
Q

rhomboid minor distal attach

A

med border of scap at root of spine

45
Q

rhomboid minor axn

A

retract and add. Scap, downward rotation, elevation

46
Q

rhomboid minor innervation

A

dorsal scapular (C4,5; directly off ventral rami)

47
Q

levator scapulae distal attach

A

medial border of scap at and above spine

48
Q

levator scapulae axn

A

elevate scap, downward rotation

49
Q

levator scapulae innervation

A

C3,4; C5 from dorsal scapular (directly off ventral rami)

50
Q

subscapularis distal attach

A

lesser tubercle of humerus & crest; ant aspect of GH capsule

51
Q

subscapularis axn

A

internal rot of humerus, stabilizes humerus head w/ Supra and infraspinatus and teres minor (rotator cuff stabilizers)

52
Q

subscapularis innervation

A

upper and lower subscap (C5,6,7–POSTERIOR CORD)

53
Q

deltoid prox attach

A

anterior: lateral 1/3 of clavicle, anterior surface
middle: lateral aspect of acromion
posterior: inferior lip of crest of spine of scapula

54
Q

deltoid distal attach

A

deltoid tuberosity of humerus

55
Q

deltoid axn

A

ant: abd, flex, IR humerus
middle, abd humerus
posterior: ext, ER, abd humerus

56
Q

deltoid innervation

A

axillary n. C5,6

57
Q

latissimus dorsi prox attach

A

thoracolumbar fascia, spinous process TV6-12, inferior 3-4 ribs, iliac crest

58
Q

latissimus dorsi distal attach

A

floor of intertubercular groove of humerus

59
Q

latissimus dorsi axn

A

ext, add, IR humerus

60
Q

latissimus dorsi innervation

A

thoracodorsal n. C6,7,8

61
Q

coracobrachialis prox attach

A

apex of coracoid process

62
Q

coracobrachialis distal attach

A

middle 1/3 humerus

63
Q

coracobrachialis axn

A

flexion, add of humerus

64
Q

coracobrachialis innervation

A

musculocutaneous n. C5,6,7

65
Q

biceps brachii prox attach

A

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

66
Q

biceps brachii distal attach

A

radial tuberosity and fascia of forearm via bicipital aponeurosis

67
Q

biceps brachii axn

A

long: weak shld flexion, weak abd when ER
both: elbow flexion, forearm supination

68
Q

biceps brachii innervation

A

musculocutaneous n. (C5,6)

69
Q

brachialis prox attach

A

distal half of humerus, anterior

70
Q

brachialis distal attach

A

ulnar tuberosity and anterior aspect of coranoid process of ulna

71
Q

brachialis axn

A

elbow flexion regardless of position

72
Q

brachialis innervation

A

musculocutaneous (C5,6)

73
Q

triceps brachii prox attach

A

long: infraglenoid tubercle of scap
lat: posterior surface of humerus, superior to radial groove
medial head: posterior surface of humerus, inferior to radial groove

74
Q

triceps brachii distal attach

A

proximal end of olecranon and fascia of forearm

75
Q

triceps brachii axn

A

elbow ext
long: also steadies head of abducted humerus

76
Q

triceps brachii innervation

A

radial n. C6,7,8

77
Q

anconeus prox attach

A

lateral epicondyle of humerus

78
Q

anconeus distal attach

A

olecranon process of ulna

79
Q

anconeus axn

A

assists in elbow extension

80
Q

anconeus innervation

A

radial n (C7,8,T1)

81
Q

brachioradialis prox attach

A

prox 2/3 of lateral supracondylar ridge of humerus

82
Q

brachioradialis distal attach

A

lateral surface of distal end of radius

83
Q

brachioradialis axn

A

elbow flexion (most effective mid pronation)

84
Q

brachioradialis innervation

A

radial n. C5,6,7

85
Q

supinator prox attach

A

lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa & crest of ulna

86
Q

supinator distal attach

A

lateral, posterior, and anterior surfaces of proximal 1/3 of radius

87
Q

supinator axn

A

supinates forearm

88
Q

supinator innervation

A

deep branch of radial n. (C7,8)

Functional Anatomy (7 decks)

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