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Muscles > Actions_Upper Extremity > Flashcards

Actions_Upper Extremity Flashcards

1
Q

Trapezius

A

Upper: elevation of scapula, scapular upward rotation

With insertion fixed: cervical extension (bilateral), capital extension (bilateral), extension and lateral flexion of head and neck to SAME side (unilateral), rotation of head and neck to opposite side (unilateral)

Middle: scapular adduction

Lower: scapular depression, adduction, and upward rotation

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2
Q

Rhomboid Major and Minor

A

scapular adduction, elevation, and downward rotation

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3
Q

Levator Scapulae

A

scapular elevation, adduction, and downward rotation, cervical rotation to the SAME side (unilateral), cervical side bending to the same side (unilateral)

assists cervical extension (bilateral)

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4
Q

Serratus Anterior

A

scapular abduction and upward rotation

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5
Q

Pectoralis Minor

A

scapular protraction/abduction (Kendall calls it anterior tilt of the scapula)

elevation of ribs in forced expiration when scapula is fixed by levator scapulae

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6
Q

Latissimus Dorsi

A

shoulder extension, adduction, and IR

  • hyperextension of spine (bilateral action with humeral attachment fixed)
  • anterior tilt of the pelvis (bilateral action with humeral attachment fixed)
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7
Q

Pectoralis Major

A

Whole Muscle: shoulder adduction and IR, elevation of the thorax with forced inspiration (with upper extremities fixed)

Upper (clavicular): shoulder IR, flexion, and horizontal adduction

Lower (sternocostal): obliquely adduct shoulder toward opposite hip, shoulder extension from flexed position

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8
Q

Subscapularis

A

shoulder IR, stabilization of GH joint

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9
Q

Subclavius

A

depresses and moves clavicle forward

assist shoulder depression

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10
Q

Deltoid

A

Anterior: shoulder flexion, IR, abduction, and horizontal adduction

Middle: shoulder abduction

Posterior: shoulder extension, ER, abduction, and horizontal abduction

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11
Q

Supraspinatus

A

shoulder abduction, stabilization of GH joint

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12
Q

Infraspinatus

A

shoulder ER, stabilization of GH joint

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13
Q

Teres Minor

A

shoulder ER, stabilization of GH joint

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14
Q

Teres Major

A

shoulder extension (from a flexed position), shoulder adduction, shoulder IR

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15
Q

Coracobrachialis

A

shoulder flexion and adduction

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16
Q

Biceps Brachii

A

shoulder flexion, elbow flexion, supination, stabilization of GH joint

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17
Q

Brachialis

A

elbow flexion

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18
Q

Triceps Brachii

A

Whole: elbow extension

Long head: assists shoulder extension and adduction

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19
Q

Brachioradialis

A

elbow flexion

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20
Q

Anconeus

A

elbow extension (weak)

21
Q

Supinator

A

supination of forearm

22
Q

Pronator Teres

A

pronation of forearm

assists elbow flexion

23
Q

Pronator Quadratus

A

pronation of forearm

24
Q

Extensor Carpi Radialis Longus

A

wrist extension and radial deviation

assist elbow flexion

25
Q

Extensor Carpi Radialis Brevis

A

wrist extension

assist radial deviation

26
Q

Extensor Carpi Ulnaris

A

wrist extension and ulnar deviation

27
Q

Flexor Carpi Radialis

A

wrist flexion and radial deviation

assist elbow flexion and pronation

28
Q

Palmaris Longus

A

wrist flexion, tenses palmar fascia

29
Q

Flexor Carpi Ulnaris

A

wrist flexion and ulnar deviation

assist elbow flexion

30
Q

Extensor Digitorum

A

MP extension (digits 2-5)

IP extension in conjunction with the hand intrinsics (digits 2-5); without the intrinsics produces MP hyperextension

assist wrist extension

31
Q

Extensor Indicis

A

MP extension of index finger

IP extension in conjunction with the hand intrinsics in the index finger

assist wrist extension

32
Q

Flexor Digitorum Superficialis

A

PIP flexion (digits 2-5)

assists MP flexion (digits 2-5) and wrist flexion

33
Q

Flexor Digitorum Profundus

A

DIP flexion (digits 2-5)

Assists MP and PIP flexion (digits 2-5) and wrist flexion

34
Q

Extensor Digiti Minimi

A

little finger MP and IP extension in conjunction with hand intrinsics in the little finger

assist wrist extension

35
Q

Abductor Digiti Minimi

A

little finger abduction

assist little finger opposition, may assist little finger MCP flexion and IP extension

36
Q

Flexor Digiti Minimi Brevis

A

little finger MP flexion

assist little finger opposition

37
Q

Opponens Digiti Minimi

A

little finger opposition

38
Q

Palmaris Brevis

A

corrugates skin on the ulnar side of the hand

39
Q

Lumbricals

A

MP flexion and simultaneous IP extension

4th lumbrical assists opposition of 5th digit

40
Q

Dorsal Interossei

A

MP abduction of index, middle, and ring fingers

Assist MP flexion, IP extension, and thumb adduction (1st DI)

41
Q

Palmar Interossei

A

MP adduction of index, ring, and little fingers

Assists MP flexion, IP extension, assist opposition of digit 5 (3rd PI)

42
Q

Abductor Pollicis Longus

A

thumb CMC abduction and extension, radial deviation

assist wrist flexion (weak)

43
Q

Extensor Pollicis Longus

A

thumb IP extension

assist thumb MP extension, thumb CMC extension, and radial deviation

44
Q

Extensor Pollicis Brevis

A

thumb MP extension, CMC extension, and CMC abduction

assist radial deviation and wrist extension

45
Q

Flexor Pollicis Longus

A

thumb IP flexion

assist MP flexion, CMC flexion, and wrist flexion

46
Q

Flexor Pollicis Brevis

A

thumb MP flexion, CMC flexion

assist thumb opposition

47
Q

Abductor Pollicis Brevis

A

thumb CMC abduction, MP abduction

assist thumb opposition and thumb IP extension

48
Q

Opponens Pollicis

A

thumb CMC opposition (via simultaneous CMC flexion, abduction, and IR)

49
Q

Adductor Pollicis

A

thumb CMC adduction

assist thumb MP adduction and thumb MP flexion

Muscles (12 decks)

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