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ACSM CPT > Shoulder muscles > Flashcards

Shoulder muscles Flashcards

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NASM ® CPT flashcards
1
Q

anterior muscles of shoulder

A

pec maj, subscap, coracobrachialis, and biceps brachi

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2
Q

posterior shoulder muscles

A

infraspinatus and teres minor

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3
Q

superior shoulder muscles

A

deltoid and supraspinatus

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4
Q

inf shoulder muscles

A

lats, teres major, and long head of triceps brachii

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5
Q

Pec major muscle action

A

prime mover of add, h add, and internal rot of humerus

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6
Q

shape of pec major

A

triangular

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7
Q

pec major origin

A

along medial clavicle and sternum

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8
Q

pec major insertion

A

intertubercular groove of humerus

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9
Q

pec maj clav portion muscles action

A

flex humerus

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10
Q

pec majr sternocostal portion extends

A

humerus from flexed position

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11
Q

coracobrachialis assist w/ what muscle actions

A

shoulder flexion and add

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12
Q

biceps brachii is what kind of jt and how many head muscle that crosses what?

A

The biceps is a 2-jt, 2 head muscle that corsses the shoulder and elbow

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13
Q

all 3 heads of deltoid insertions?

A

All heads insert @ deltoid tuberosity on lateral humerus

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14
Q

ant delt origin

A

anterolateral aspect of clavicle

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15
Q

ant delt is chiefly responsible for what muscle actions?

A

shoulder flexion, h add, and IR of GH jt

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16
Q

midd delt origin

A

lateral aspect of acromion

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17
Q

midd delt muscle action

A

abd of GH Jt

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18
Q

post delt origin

A

inferior aspect of scapular spine

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19
Q

post delt muscle action

A

GH ext, h abd, and ER, oppose ant delt

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20
Q

Which deltoid is usually more dvp’d ? Cuases what?

A

Ant more dvp’d than post delt causing imbalance.

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21
Q

Post under dvp than ant delt is imbalance that causes what?

A

postural abnormalities (shoulder fwd and IR) and may be related to shoulder problems such as shoulder impingement syndrome

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22
Q

What 4 muscles make up rotator cuff?

A

Subscap, Infraspinatus, Teres minor, and supraspinatus

23
Q

rotator cuffs insertion

A

greater and lesser tubercles of humerus

24
Q

rot cuffs origin

A

scapula

25
Q

supraspinatus muscle action

A

iniates abd at GH Jt

26
Q

infraspinatus and teres minor muscle action

A

externally rotates GH jt

27
Q

subscap muscle action

A

IR GH jt

28
Q

4 ways RC stabs shoulder?

A

passive muscle tension

contraction of muscles causng compression of articular surface

Jt motion that result in seconadry tightening of ligamentous restrainsts

barrier effect of contracted muscle

29
Q

Lat dorsi origin

A

iliac crest and post sacrum via thoracolumbar fascia, lower 6 vertebrae, and lower 3 ribs

30
Q

lats insertion

A

interubercular groove of humerus,

31
Q

lats muscle action

A

strong extensor, IR, and add of GH jt

32
Q

lats angle of pull when arm abd is

A

30-90

33
Q

teres majr acts like

A

lats

34
Q

pec minor origin

A

anterior aspects of 3rd - 5th ribs

35
Q

pec minor insertion

A

coracoid process of scapula

36
Q

When pec minor contracts, what muscle action occurs

A

protraction, downward rot, and depression of scapula

37
Q

SA origin

A

several bands on upper 9 ribs laterally

38
Q

SA insertion

A

ant aspect of medial border of scapula

39
Q

SA muscle action

A

protracts scapula

40
Q

SA is active in what motions

A

pushing and reaching

41
Q

subclavius is a what and does what?

A

small muscle that protects and stabilizes SC jt

42
Q

ant shoulder girdle muscles

A

pec minor, SA, and subcalvius

43
Q

post shoulder girdle muscles

A

lev scap, Rh, traps

44
Q

Lev scap origin

A

transverse processes of upper 4 cervical vertebrae, run obliquely

45
Q

lev scap insertion

A

medial border superior to scapular spine

46
Q

lev scap muscle action

A

elevation and downward rot of scapula, also act on neck

47
Q

Rh origin

A

spinous processes of last cervical and upper 5 vertebrae

48
Q

Rh insertion

A

medial border of scapula from spine to inf angle

49
Q

traps origin

A

covers broad area from base of occipt to spinous process of 12th thoracic vertebra

50
Q

traps insertion

A

lateral clavicle, medial border of acromion, and scapular spine

51
Q

contraction of upper traps causes

A

scapular elevation

52
Q

middle traps contraction cuases

A

scapular retraction

53
Q

lower traps contraction

A

scapular depression

54
Q

Together upper and lower traps cause

A

upward rot of scapula

ACSM CPT (15 decks)

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