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Back and Extremities > Muscle Actions- Upper Extremity > Flashcards

Muscle Actions- Upper Extremity Flashcards

1
Q

Latissimus Dorsi

A

humeral adduction, extension & medial rotation

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2
Q

Levator Scapulae

A

elevation & inferior rotation of the lateral angle of the scapula

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3
Q

Pectoralis Major

A

humeral adduction, flexion & medial rotation

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4
Q

Pectoralis Minor

A

scapular protraction & assists with depression of the shoulder (assists with forced inspiration [with scapular fixation])

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5
Q

Rhomboids

A

scapular retraction & inferior rotation of the lateral angle

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6
Q

Serratus Anterior

A

scapular protraction & upward rotation of the lateral angle of the scapula

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7
Q

Trapezius

A

scapular elevation, depression, retraction & superior rotation of the lateral angle

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8
Q

Deltoid

A

humeral flexion, medial rotation, abduction, extension & lateral rotation

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9
Q

Subscapularis

A

stabilizes the glenohumeral joint, and medially rotates & adducts humerus

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10
Q

Supraspinatus

A

initiates humeral abduction

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11
Q

Teres Major

A

humeral adduction & medial rotation

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12
Q

Infraspinatus

A

stabilizes glenohumeral joint, and lateral rotation of humerus

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13
Q

Teres Minor

A

stabilizes glenohumeral joint, and lateral rotation of humerus

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14
Q

Biceps Brachii

A

flexion of the arm & forearm, & supination of the forearm

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15
Q

Brachialis

A

flexion of the forearm

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16
Q

Coracobrachialis

A

flexion & adduction of arm

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17
Q

Triceps Brachii

A

extension of the arm (long head) & extension of the forearm (long, lateral & medial heads)

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18
Q

Abductor Pollicis Longus

A

abducts and extends thumb at carpometacarpal joint

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19
Q

Brachioradialis

A

flexes forearm

20
Q

Extensor carpi radialis brevis

A

extends & abducts hand at wrist

21
Q

Extensor carpi radialis longus

A

extends & abducts hand at wrist

22
Q

Extensor carpi ulnaris

A

extends & adducts hand at wrist

23
Q

Extensor digitorum

A

extends phalanges (MP) and hand at wrist

24
Q

Extensor digiti minimi

A

extends 5th digit (MP & IP)

25
Q

Extensor indicis

A

extends 2nd digit (MP & IP)

26
Q

Extensor pollicis brevis

A

extends thumb (MP)

27
Q

Extensor pollicis longus

A

extends thumb (MP & IP)

28
Q

Flexor carpi radialis

A

flexes & abducts hand at wrist

29
Q

Flexor carpi ulnaris

A

flexes & adducts hand at wrist

30
Q

Flexor digitorum profundus

A

flexion of digits 2-5 (MP & IP), and flexion hand at wrist

31
Q

Flexor digitorum superficialis

A

flexion of digits (MP & proximal IP), and hand at wrist

32
Q

Flexor pollicis longus

A

flexes thumb (MP & IP)

33
Q

Palmaris longus

A

flexes hand at wrist

34
Q

Pronator Quadratus

A

pronates the forearm

35
Q

Pronator Teres

A

pronates & flexes forearm

36
Q

Supinator

A

supinates forearm

37
Q

Abductor digiti minimi

A

abducts 5th digit

38
Q

Abductor pollicis brevis

A

abducts thumb

39
Q

Adductor pollicis

A

adducts thumb

40
Q

Dorsal interossei

A

abducts (MP), flexes (MP) & extends (IP) digits 2-4

41
Q

Flexor digiti minimi brevis

A

flexes (MP) 5th digit

42
Q

Flexor pollicis brevis

A

flexes (MP) thumb

43
Q

Lumbricals

A

flexes (MP) and extends (IP) digits 2-5

44
Q

Opponens digiti minimi

A

opposition of 5th digit to thumb

45
Q

Opponens pollicis

A

opposition of thumb to 5th digit

46
Q

Palmar Interossei

A

adducts (MP), flexes (MP) & extends (IP) digits 2, 4 & 5

Back and Extremities (5 decks)

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