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DPT 652 > Shoulder Myology > Flashcards

Shoulder Myology Flashcards

1
Q

posterior axioappendicular muscles

A 
trapezius
latissimus dorsi
levator
scapulae
rhomboids
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2
Q

name of the extrinsic shoulder muscles

A

posterior axioappendicular muscles

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3
Q

scapulohumeral muscles

A 
deltoid
teres major
rotator cuff (supraspinatus, infraspinatus, teres minor, subscapularis)
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4
Q

name of intrinsic shoulder muscles

A

scapulohumeral muscles

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5
Q

anterior axioappendicular muscles

A

pectoralis major
pectoralis minor
serratus anterior
subclavius

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6
Q

extrinsic muscles

A

group of muscles located superficially on a given structure

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7
Q

intrinsic muscles

A

group of muscles located deep on a given structure in relation to more superficial muscles

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8
Q

synergists

A

muscles that assist the prime mover

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9
Q

glenohumeral flexors

A

anterior deltoid
pectoralis major
biceps brachii
coracobrachialis

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10
Q

glenohumeral extensors

A

posterior deltoid
latissimus dorsi
teres major
triceps brachii

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11
Q

glenohumeral horizontal abduction

A

posterior deltoid

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12
Q

glenohumeral horizontal adduction

A

anterior deltoid

pectoralis major

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13
Q

glenohumeral abduction

A

deltoid

supraspinatus

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14
Q

glenohumeral adduction

A 
latissimus dorsi
teres major
infraspinatus
teres minor
pectoralis major
triceps brachii
coracobrachialis
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15
Q

glenohumeral lateral rotation (external rotation)

A

posterior deltoid
infraspinatus
teres minor

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16
Q

glenohumeral medial rotation (internal rotation)

A 
anterior deltoid
latissmus dorsi
teres major
subscapularis
pectoralis major
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17
Q

scapulothoracic depression

A

lower trapezius
fixed serratus anterior
pectoralis minor

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18
Q

scapulothoracic elevation

A

upper trapezius
rhomboid major
rhomboid minor
unilateral levator scapula

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19
Q

scapulothoracic adduction (retraction)

A

mid trapezius
rhomboid major
rhomboid minor

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20
Q

scapulothoracic abduction (protraction)

A

fixed serratus anterior

pectoralis minor

21
Q

scapulothoracic upward rotation

A

upper and lower trapezius

fixed serratus anterior

22
Q

scapulothoracic downward rotation

A

rhomboid major
rhomboid minor
levator scapula
pectoralis minor

23
Q

supraspinatus action

A

rotator cuff muscle that functions to assist in glenohumeral abduction

24
Q

supraspinatus origin

A

supraspinous fossa of the scapula

25
Q

supraspinatus insertion

A

greater tubercle of the humerus

26
Q

supraspinatus innervation

A

C4, C5, C6

27
Q

infraspinatus action

A

rotator cuff muscle that functions to laterally (externally) rotate the glenohumeral joint, assists in shoulder adduction, and stabilizes the head of the humerus in the glenoid cavity

28
Q

infraspinatus origin

A

infraspinous fossa of the scapula

29
Q

infraspinatus insertion

A

greater tubercle of the humerus

30
Q

infraspinatus innervation

A

C4, 5, 6

31
Q

teres minor

A

rotator cuff muscles that functions to laterally (externally) rotate the glenohumeral joint, assist in adduction and stabilize the head of the humerus in the glenoid cavity

32
Q

teres minor origin

A

upper tow-thirds of lateral border of the scapula

33
Q

teres minor insertion

A

greater tubercle of the humerus

34
Q

teres minor axillary

A

C5, 6

35
Q

subscapularis

A

rotator cuff muscle that functions to medially (internally) rotate the glenohumeral joint and stabilize the head of the humerus in the glenoid cavity

36
Q

subscapularis origin

A

subscapular fossa of the scapula

37
Q

subscapularis insertion

A

lesser tubercle of the humerus

38
Q

subscapularis innervation

A

C5, 6, 7

39
Q

synovial joints

A

type of joint where bones share an enclosed articular capsule which connects bones which do not touch. (e.g. sternoclavicular, shoulder, elbow, hip, knee, proximal tibiofibular, etc…)

40
Q

fibrous joints

A

joints bound with dense fibrous connective tissue (e.g. cranial sutures, distal tibiofibular joint, cuboideonavicular)

41
Q

cartilaginous (costochondral) joints

A

joints joined by cartilage; two types, primary - synchondrosis (hyaline cartilage), and secondary - symphysis (hyaline cartilage covers bone, but fibrocartilage connects them)

42
Q

synarthrosis (movement)

A

little/no mobility

43
Q

amphiarthrosis (movement)

A

slight mobility

44
Q

diarthrosis (movement)

A

freely moveable

45
Q

uniaxial

A

mvmt back and forth along single axis

46
Q

biaxial

A

mvmt along 2 axes

47
Q

polyaxial

A

mvmt through all 3 axes

48
Q

scapulothoracic movements

A

elevation & depression
protraction & retraction
upward & downward rotation

49
Q

scaption/scapular plane elevation

A

characterized by clavicle deviation ~20 degrees posterior to frontal plane, scapular deviation ~35 degrees anterior to frontal plane, and retroversion of humeral head ~30 degrees posterior to m/l axis at elbow

DPT 652 (3 decks)

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