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Functional Anatomy > Upper Extremity Muscles > Flashcards

Upper Extremity Muscles Flashcards

(88 cards)

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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
teres major axn
ext, adduction, IR of humerus
26
teres major innervation
lower subscapular (C5,6)
27
trapezius prox attach
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
28
trapezius distal attach
upper: lateral 1/3 of clavicle middle: middle acromion and spine of scapula lower: tubercle of crest of scapula
29
trapezius axn
upper: upward rotation w/ lower, elevation, retract/add scapula middle: retract and adduct scap lower: upward rotation with upper, depression, retract and adduct scap
30
trapezius innervation
cranial nerve XI (spinal accessory; motor) C3,4 ventral rami (proprioception and pain)
31
pectoralis major innervation
medial (C8,T1) and lateral pectoral (C5,6,7)
32
pectoralis minor distal attach
upper surface of coracoid process
33
pectoralis minor axn
stabilize scap, brings it inferiority and anteriorly against thoracic wall, depresses tip of shoulder
34
pectoralis minor innervation
medial (C8, T1) and lateral pectoral (C5,6,7)
35
subclavius distal attach
inferior surface of middle 1/3 of clavicle
36
subclavius axn
anchors clavicle, depresses it
37
subclavius innervation
n. To subclavius (C5,6; off superior trunk***)
38
serratus anterior distal attach
costal surface of scapula at superior angle, medial border, inferior angle
39
serratus anterior axn
protraction, abd, upward rotation of scap; stabilizes against thorax (for delt on humerus)
40
serratus anterior innervation
Long thoracic (C5,6,7 ***directly off ventral rami
41
rhomboid major distal attach
medial border of scap at and below spine
42
rhomboid major axn
retract/adduct scap, downward rotation of scap, elevation
43
rhomboid major innervation
dorsal scapular (C4,C5; directly off ventral rami)
44
rhomboid minor distal attach
med border of scap at root of spine
45
rhomboid minor axn
retract and add. Scap, downward rotation, elevation
46
rhomboid minor innervation
dorsal scapular (C4,5; directly off ventral rami)
47
levator scapulae distal attach
medial border of scap at and above spine
48
levator scapulae axn
elevate scap, downward rotation
49
levator scapulae innervation
C3,4; C5 from dorsal scapular (directly off ventral rami)
50
subscapularis distal attach
lesser tubercle of humerus & crest; ant aspect of GH capsule
51
subscapularis axn
internal rot of humerus, stabilizes humerus head w/ Supra and infraspinatus and teres minor (rotator cuff stabilizers)
52
subscapularis innervation
upper and lower subscap (C5,6,7–POSTERIOR CORD)
53
deltoid prox attach
anterior: lateral 1/3 of clavicle, anterior surface middle: lateral aspect of acromion posterior: inferior lip of crest of spine of scapula
54
deltoid distal attach
deltoid tuberosity of humerus
55
deltoid axn
ant: abd, flex, IR humerus middle, abd humerus posterior: ext, ER, abd humerus
56
deltoid innervation
axillary n. C5,6
57
latissimus dorsi prox attach
thoracolumbar fascia, spinous process TV6-12, inferior 3-4 ribs, iliac crest
58
latissimus dorsi distal attach
floor of intertubercular groove of humerus
59
latissimus dorsi axn
ext, add, IR humerus
60
latissimus dorsi innervation
thoracodorsal n. C6,7,8
61
coracobrachialis prox attach
apex of coracoid process
62
coracobrachialis distal attach
middle 1/3 humerus
63
coracobrachialis axn
flexion, add of humerus
64
coracobrachialis innervation
musculocutaneous n. C5,6,7
65
biceps brachii prox attach
short head: coracoid process long head: supraglenoid tubercle of scap
66
biceps brachii distal attach
radial tuberosity and fascia of forearm via bicipital aponeurosis
67
biceps brachii axn
long: weak shld flexion, weak abd when ER both: elbow flexion, forearm supination
68
biceps brachii innervation
musculocutaneous n. (C5,6)
69
brachialis prox attach
distal half of humerus, anterior
70
brachialis distal attach
ulnar tuberosity and anterior aspect of coranoid process of ulna
71
brachialis axn
elbow flexion ***regardless of position***
72
brachialis innervation
musculocutaneous (C5,6)
73
triceps brachii prox attach
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
triceps brachii distal attach
proximal end of olecranon and fascia of forearm
75
triceps brachii axn
elbow ext long: also steadies head of abducted humerus
76
triceps brachii innervation
radial n. C6,7,8
77
anconeus prox attach
lateral epicondyle of humerus
78
anconeus distal attach
olecranon process of ulna
79
anconeus axn
assists in elbow extension
80
anconeus innervation
radial n (C7,8,T1)
81
brachioradialis prox attach
prox 2/3 of lateral supracondylar ridge of humerus
82
brachioradialis distal attach
lateral surface of distal end of radius
83
brachioradialis axn
elbow flexion (most effective mid pronation)
84
brachioradialis innervation
radial n. C5,6,7
85
supinator prox attach
lateral epicondyle of humerus, radial collateral and annular ligaments, supinator fossa & crest of ulna
86
supinator distal attach
lateral, posterior, and anterior surfaces of proximal 1/3 of radius
87
supinator axn
supinates forearm
88
supinator innervation
deep branch of radial n. (C7,8)

Functional Anatomy (7 decks)

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