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musculoskeletal anatomy > shoulder girdle > Flashcards

shoulder girdle Flashcards

1
Q

scapula and clavicle move as

A

unit

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2
Q

only thing “holding” shoulder together

A

clavicle articulation with sternum

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3
Q

scapulothoracic joint: scapula moves on

A

ribs

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4
Q

scapulothoracic joint: joint motion occurs at

A

sternoclavicular joint

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5
Q

sternoclavicular joint __ planes

A

2

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6
Q

SC joint type

A

saddle (sellar), diarthrodial, synovial

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7
Q

SC joint movements

A

15 protraction, 15 retraction, 45 elevation, 5 depression

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8
Q

costoclavicular and interclavicular ligaments provide stability against

A

double retraction

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9
Q

acrominoclavicular joint type

A

synovial plane

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10
Q

AC joint motion

A

20-30 gliding, rotational

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11
Q

AC joint supported by

A

AC ligament, corococlavicular

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12
Q

why is the AC joint usually injured

A

not great articulation

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13
Q

importance of SC and AC joints

A

ab/adduction
up/down rotation
elevate/depression

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14
Q

shoulder girdle protraction aka

A

abduction

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15
Q

shoulder girdle retraction aka

A

adduction

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16
Q

shoulder girdle dependent on ___ joint for movement

A

SC

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17
Q

what do the shoulder girdle muscles do

A

provide stable base, maintain scapular position, enhance movement

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18
Q

for some shoulder girdle movements, scapula must

A

rotate or tilt on axis

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19
Q

shoulder girdle lateral tilt

A

outward tilt

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20
Q

shoulder girdle lateral tilt

A

outward tilt

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21
Q

shoulder girdle medial tilt

A

return from lateral, inward

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22
Q

“winging scapula”

A

medial tilt

23
Q

5 muscles primarily involved in shoulder girdle movements: originate on ___ insert on ____

A

axial skeleton
scapula/clavicle

24
Q

5 shoulder girdle muscles

A

traps, rhomboid, levator scapulae, serratus anterior, pec minor

25
Q

shoulder girdle muscles are primarily innervated by

A

cervical and brachial plexus

26
Q

what nerve innervates traps

A

XII, accessory

27
Q

branches of C3 and C4 importance for shoulder

A

sensation

28
Q

spinal accessory nerve

A

motor, traps

29
Q

dorsal scapula nerve

A

motor, levator scap, rhomboid

30
Q

long thoracic nerve originating c5-7 innervated

A

serratus anterior

31
Q

medial pectoral nerve originate c8-t1

A

pec major

32
Q

trap upper fiber action, scapula

A

elevate

33
Q

trap middle fiber action

A

elevation, upward rotation, adduction

34
Q

trap lower fiber action

A

depression, adduction, upward rotation

35
Q

levator scapulae action, scapula

A

elevate medial margin

36
Q

rhomboid origin

A

spinous process c7, t1-5

37
Q

rhomboid insertion

A

medial scapula

38
Q

rhomboid 3 action

A

adduction/retraction
downward rotation
elevation

39
Q

serratus anterior origin

A

upper 9 ribs

40
Q

serratus anterior insertion

A

anterior medial scapula

41
Q

serratus anterior 2 action

A

abduction/protraction
upward rotation

42
Q

pec minor origin

A

rib 3-5

43
Q

pec minor insertion

A

coronoid process scap

44
Q

pec minor 3 action

A

abduction/protraction
downward rotation
depression

45
Q

subclavius origin

A

1st rib

46
Q

subclavius insertion

A

mid clavicle

47
Q

subclavius 3 action

A

stabilization/protection
depression
abduction

48
Q

scapula protraction agonist

A

pec minor, serratus

49
Q

“punch” muscle

A

serratus

50
Q

scap retraction agonists

A

middle, lower trap
rhomboid

51
Q

scap upward rotation agonists

A

middle, upper traps
serratus

52
Q

scap downward rotation agonists

A

pec minor, rhomboid

53
Q

scap elevation agonists

A

levator scap, upper traps, rhomboids

54
Q

scapula depression agonists

A

lower, middle traps, pec minor

musculoskeletal anatomy (13 decks)

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