Actions Flashcards

1
Q

action of pec major

A

adduction, IR of humerus; clavicular head flexes humerus

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2
Q

action of pec minor

A

downward rotation of scapula; stabilizes scapula inferiorly and anteriorly

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3
Q

action of subclavius

A

anchors & depresses clavicle

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4
Q

action of supraspinatus

A

initiates abduction; ER when arm is flexed (throwing motion), weak IR (depending upon position)

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5
Q

action of infraspinatus

A

ER

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6
Q

action of teres minor

A

ER

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7
Q

action of subscapularis

A

IR

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8
Q

what motion do the rotator cuff muscles perform together

A

hold the humeral head in the glenoid cavity

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9
Q

action of deltoid

A

anterior: flexion & IR
middle: abduction
posterior: extension & ER

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10
Q

action of teres major

A

adduction & IR

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11
Q

action of coracobrachialis

A

flexion & adduction of humerus

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12
Q

action of biceps brachii

A

supinates forearm; flexes forearm when supinated

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13
Q

action of brachialis

A

flexes forearm (all positions)

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14
Q

action of triceps brachii

A

extends the forearm

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15
Q

action of anconeus

A

assists triceps with extension; stabilizes forearm

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16
Q

action of brachioradialis

A

flexion of forearm (most effective in neutral position)

17
Q

action of pronator teres

A

pronates & flexes forearm

18
Q

action of flexor carpi radialis

A

flexes & radial deviates hand

19
Q

action of flexor carpi ulnaris

A

flexes & ulnar deviates hand

20
Q

action of palmaris longus

A

flexes hand & tenses palmar aponeurosis

21
Q

action of flexor digitorum superficialis

A

flexes proximal & middle phalanges 2-5

22
Q

action of flexor digitorum profundus

A

flexes distal phalanges 2-5

23
Q

action of flexor pollicis longus

A

flexes phalanges of thumb

24
Q

action of pronator quadratus

A

pronates forearm; binds radius & ulna together (deep)

25
Q

action of extensor carpi radialis longus

A

extend & radially deviate hand

26
Q

action of extensor carpi radialis brevis

A

extend & radially deviate hand

27
Q

action of extensor digitorum

A

extends digits 2-5 at MCP joint

28
Q

action of extensor digiti minimi

A

extends 5th digit

29
Q

action of extensor carpi ulnaris

A

extends wrist & ulnar deviation

30
Q

action of supinator

A

supinates forearm

31
Q

action of abductor pollicis longus

A

abducts thumb and extends it at CMC joint

32
Q

action of extensor pollicis brevis

A

extends proximal phalanx, extends MCP

33
Q

action of extensor pollicis longus

A

extends distal phalanx, extends MCP and CMC joint at thumb

34
Q

action of extensor indicis

A

extends 2nd digit