Shoulder Muscles and function Flashcards

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1
Q

Serratus Anterior
Joint it crosses:
Actions:

A

Scapula (Shoulder girdle)

Protraction and Upward Rotation

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2
Q

Pectoralis Minor
Joint it crosses:
Actions:

A

scapula (shoulder girdle)

depression, downward rotation, protraction, anterior tipping

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3
Q

Upper Trapezius
Joint it crosses:
Actions:

A

scapula

elevation and upward rotation

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4
Q

Middle Trapezius
Joint it crosses:
Actions:

A

scapula

retraction

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5
Q

Lower Trapezius
Joint it crosses:
Actions:

A

scapula
depression and upward rotation
(think pinwheel!)

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6
Q

Levator Scapulae
Joint it crosses:
Actions:

A

scapula
elevation and downward rotation
(think pinwheel!)

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7
Q

Rhomboids
Joint it crosses:
Actions:

A

scapula

retraction, downward rotation, elevation

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8
Q

Anterior Deltoid
Joint it crosses:
Actions:

A

shoulder (glenohumeral joint)

flexion, horizontal adduction, internal rotation

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9
Q

Middle Deltoid
Joint it crosses:
Actions:

A

shoulder (glenohumeral joint)

abduction

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10
Q

Posterior Deltoid
Joint it crosses:
Actions:

A

shoulder (glenohumeral joint)

extension, horizontal abduction, external rotation

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11
Q

Supraspinatus
Joint it crosses:
Actions:

A

shoulder (glenohumeral joint)

abduction

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12
Q

Infraspinatus
Joint it crosses:
Actions:

A

shoulder (glenohumeral joint)

external rotation

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13
Q

Teres Minor
Joint it crosses:
Actions:

A

shoulder

external rotation

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14
Q

Subscapularis
Joint it crosses:
Actions:

A

shoulder (glenohumeral joint)

internal rotation

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15
Q
Pectoralis Major (Sternal head)
Joint it crosses:
Actions:
A

Shoulder
Internal rotation, horizontal adduction
sternal = assists with adduction

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16
Q
Pectoralis Major (Clavicular head)
Joint it crosses:
Actions:
A

Shoulder
internal rotation, horizontal adduction
clavicular = assists with flexion

17
Q

Latissimus Dorsi
Joint it crosses:
Actions:

A

Shoulder

adduction, extension, internal rotation

18
Q

Teres Major
Joint it crosses:
Actions:

A

shoulder

adduction, extension, internal rotation

19
Q

Biceps Brachii
Joint it crosses:
Actions:

A

shoulder, elbow, radioulner

shoulder: flexion
elbow: flexion
radioulner: supination

20
Q

Brachialis
Joint it crosses:
Actions:

A

elbow

flexion

21
Q

Triceps Brachii
Joint it crosses:
Actions:

A

lateral and medial heads: elbow
long head: elbow and shoulder
extension (long head contributes to shoulder adduction and extension.)