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Upper Extremity Muscles > Muscle Actions > Flashcards

Muscle Actions Flashcards

1
Q

Latissimus Dorsi

A

Humeral adduction, extension, and medial rotation

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2
Q

Levator Scapulae

A

Elevation and inferior rotation of the lateral angle of the scapula

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3
Q

Pectoralis Major

A

Humeral adduction, flexion, and medial rotation

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4
Q

Pectoralis Minor

A

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

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5
Q

Rhomboids

A

Scapular retraction and inferior rotation of the lateral angle

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6
Q

Serratus anterior

A

Scapular protraction and upward rotation of the lateral angle of the scapula

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7
Q

Trapezius

A

Scapular elevation, depression, retraction, and superior rotation of the lateral angle

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8
Q

Deltoid

A

Humeral flexion, medial rotation, abduction, extension, and lateral rotation

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9
Q

Subscapularis

A

Stabilizes the glenohumeral , medially rotates and adducts humerus

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10
Q

Supraspinatus

A

Initiates humeral abduction

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11
Q

Teres Major

A

Humeral adduction and 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 and forearm, and 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 and adduction of arm

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17
Q

Triceps

A

Extension of the arm (long head) and extension of the forearm (long, lateral, and 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 and abducts hand at wrist

21
Q

Extensor carpi radialis longus

A

Extends and abducts hand at wrist

22
Q

Extensor carpi ulnaris

A

Extends and 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 and abducts hand at wrist

29
Q

Flexor carpi ulnaris

A

Flexes and adducts hand at wrist

30
Q

Flexor digitorum profundus

A

Flexion of digits 2-5 (MP & IP) and flexion of 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 and 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, flexes, and extends digits 2-4

41
Q

Flexor digiti minimi brevis

A

Flexes 5th digit

42
Q

Flexor pollicis brevis

A

Flexes thumb

43
Q

Lumbricals

A

Flexes and extends 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, flexes, and extends digits 2, 4, and 5

Upper Extremity Muscles (2 decks)

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