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Kines > Shoulder and Elbow Complex > Flashcards

Shoulder and Elbow Complex Flashcards

1
Q

Serratus Anterior

A

scapular abduction/protraction; scapular upward/lateral rotation; scapula stabilizer
depression

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2
Q

Levator Scapulae

A

scapular elevation; downward/medial rotation

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3
Q

Upper Trapezius

A

scapular elevation; upward/lateral rotation

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4
Q

Middle Trapezius

A

scapular adduction/retraction

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5
Q

Lower Trapezius

A

scapular depression; scapular upward/lateral rotation; scapular adduction/retraction

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6
Q

Rhomboid Minor

A

scapular adduction/retraction; scapular downward/medial rotation

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7
Q

Rhomboid Major

A

scapular adduction/retraction; scapular downward/medial rotation

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8
Q

Anterior Deltoid

A

shoulder flexion; shoulder internal rotation

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9
Q

Middle Deltoid

A

shoulder abduction

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10
Q

posterior deltoid

A

shoulder extension; shoulder external rotation

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11
Q

supraspinatus

A

initiates and assists deltoid in shoulder abduction

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12
Q

coracobrachialis

A

shoulder flexion; shoulder adduction

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13
Q

Pectoralis Major

A

shoulder horizontal adduction; shoulder internal rotation

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14
Q

Pectoralis Minor

A

scapular protraction/abduction; scapular downward/medial rotation; depression; anterior tilt of scapula

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15
Q

subscapularis

A

shoulder internal rotation; adduction of humerus

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16
Q

infraspinatus

A

shoulder external rotation; extension of humerus

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17
Q

teres minor

A

shoulder external/lateral rotation; extension of humerus

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18
Q

teres major

A

shoulder extension; shoulder internal/medial rotation

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19
Q

latissimus dorsi

A

shoulder extension; shoulder adduction; shoulder internal/medial rotation

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20
Q

rotator cuff muscles

A

supraspinatus; infraspinatus; teres minor; subscapularis

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21
Q

Role #1 of the Scapula

A

be a stable part of the glenohumeral articulation

22
Q

Role #2 of the Scapula

A

retract and protract along the thoracic wall

23
Q

Role #3 of the Scapula

A

Serve as a base for muscle attachment

24
Q

Role #4 of the Scapula

A

Elevate the acromion to avoid impingement by the greater tubercle

25
Q

Role #5 of the scapula

A

serve as a link in the proximal to distal sequence energy delivery

26
Q

scapulohumeral rhythm - GH joint

A

90 active and 120 passive flexion/abduction without scapula moving
Responsible for 120 degrees of shoulder movement

27
Q

scapulohumeral rhythm - ST joint

A

AC and SC joints move 30 degrees each

28
Q

upward rotators of scapula

A

upper trap, serratus anterior, lower trap

29
Q

Downward rotators of scapula

A

levator scapulae, rhomboids, pec minor

30
Q

Force couple definition

A

two forces whose points of application occur on opposite sides of an axis and in opposite directiosn to produce rotation of the body

31
Q

Scaption

A

Functional elevation in a favorable plane of motion
30-45 degrees anterior to the frontal plane
improves length-tension relationship in GH muscles

32
Q

Convex-Concave Rule Principle 1

A

When the concave surface is fixed and the bone with the convex surface moves on the bone with the concave surface, the bone with convex surface slides in the opposite anatomical direction than that of the bone segment

33
Q

Convex-Concave Rule Principle 2

A

When the convex surface is fixed in place and the bone with concave surface moves on the convex surface, the concave articulation slides in the same anatomical direction that the bone segment is moving.

34
Q

Convex-Concave Rule Rolling Principle

A

Rolling of the surfaces over one another is always in the same direction as the anatomical movement regardless of the shape of the moving surface

35
Q

the sequence of muscle activation in shoulder abduction…

A

begins with scapular stabilization

36
Q

scapular stabilization relies on…

A

intact isometric > concentric > eccentric contractions of muscles controlling the scapula, which must be stabilized before the GH joint can move

37
Q

Muscle that often gets impinged; muscle that is most likely affected in a torn rotator cuff

A

supraspinatus

38
Q

Newton’s second law and muscle contraction

A

when a muscle contracts to move bone, it will act on the lightest segment first (aka scapula in shoulder movement)

39
Q

Elbow flexion muscles

A

primary - biceps brachii, brachialis, brachioradialis

secondary - extensor carpi radialis longus, pronator teres

40
Q

elbow extension

A

primary mover - triceps

41
Q

supination

A

supinator, biceps

42
Q

pronation

A

pronator quadratus, pronator teres

43
Q

nerves that cross the elbow

A

radial
ulnar
median

44
Q

muscles innervated by musculocutaneous

A

biceps brachii

part of brachialis

45
Q

muscles innervated by the median nerve

A

flexors of the wrist and hand
thenar muscles and radial lumbricals
muscles that open first web space of hand

46
Q

muscles innervated by the ulnar nerve

A 
some wrist and finger flexors
intrinsic muscles
(important in fine motor control)
47
Q

muscles innervated by the radial nerve

A

triceps
brachioradialis
part of brachialis
all wrist and digit extensors

48
Q

role of gravity in elbow extension

A

gravity assists elbow extension when an individual is upright or supine
at rest, the elbow does not rest in complete extension

49
Q

strongest supinator of the forearm

A

biceps brachii

50
Q

valgus

A

distal part of the bone is more lateral than the proximal part

51
Q

varus

A

distal part of the bone is more medial than the proximal

Kines (1 decks)

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