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Anatomy > Appendicular Muscle Actions > Flashcards

Appendicular Muscle Actions Flashcards

1
Q

serratus anterior action

A
  • protracts scapula (throwing a punch)

- stabilize and holds scapula flush to body wall

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2
Q

upper trapezius action

A

-elevates pectoral girdle

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3
Q

middle trapezius action

A
  • retract scapula (pulls posteriorly)

- some head extension

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4
Q

lower trapezius action

A

-depress pectoral girdle

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5
Q

pectoralis major action

A
  • abducts arm (downward motion)

- arm flexion

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6
Q

latissimus dorsi action

A
  • arm adduction
  • arm abduction/extension
  • arm rotation internal/externally
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7
Q

teres major action

A
  • good for fine movement and stability

- works w/ latissimus dorsi but with less force

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8
Q

deltoid action

A
  • moves the humerus
  • anterior : flexes
  • lateral: abducts
  • posterior: extends
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9
Q

rotator cuff supraspinatus action

A

-first 15° of arm abduction

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10
Q

rotator cuff infraspinatus action

A
  • not powerful muscle

- adducts of arm

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11
Q

rotator cuff teres minor action

A
  • adduction of the arm

- not powerful muscle

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12
Q

rotator cuff subscapularis action

A

-internal rotation and adduction of arm

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13
Q

biceps brachii action

A

-flex forearm

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14
Q

brachialis action

A

-flex forearm

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15
Q

brachioradialis action

A
  • one of the reflex center

- flexes the forearm

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16
Q

triceps brachii action

A

-extensor of the forearm

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17
Q

supinator action

A

-supinates forearm

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18
Q

pronator teres action

A
  • rotates forearm

- pronates

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19
Q

pronator quadratus action

A
  • rotates forearm

- pronates

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20
Q

flexor carpi radialis action

A

-radial flexion

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21
Q

flexor carpi ulnaris action

A

-ulnar flexion

22
Q

flexor digitorum superficialis action

A

-flex the fingers (digits II-V)

23
Q

flexor digitorum profundus action

A

-flex the fingers (digits II-V)

24
Q

flexor pollicis longus action

A

-flexes the thumb

25
Q

extensor carpi radialis longus action

A
  • helps move hand
  • facilitates movement at wrist
  • involved in extending and abducting the hand at wrist
26
Q

extensor carpi ulnaris action

A

-extends and adducts at the carpus/wrist from anatomical position

27
Q

extensor digitorum action

A

-extends digits

28
Q

thenar muscles action

A

-moves thumb

29
Q

hypothenar muscles action

A

-moves pinkie

30
Q

lumbricals action

A
  • flex at metacarpophalangeal joint (II-V)

- extend interphalangeal joints (II-V)

31
Q

dorsal interossei action

A

-abduct digits

32
Q

palmar interossei action

A

-adduct digits

33
Q

iliacus action

A

-flex the thigh at the hip

34
Q

psoas major action

A

-share a common tendon

35
Q

tensor fascia lata action

A
  • abducts and flexes the thigh

- pulls it anteriorly and laterally

36
Q

gluteus maximus action

A

-thigh extension

37
Q

gluteus medius action

A

-abduct and internally rotate thigh

38
Q

adductor magnus action

A

-adduct and internally rotate thigh

39
Q

sartorius action

A
  • crossing the leg
    • ->flexion at hip
    • ->flexion at knee
    • ->external rotation at hip
40
Q

rectus femoris action

A
  • extends the knee

- flexes the thigh at the hip

41
Q

vastus lateralis action

A
  • extends the knee joint

- moves the lower leg forward

42
Q

vastus intermedius action

A

-extension of knee

43
Q

vastus medialis action

A
  • knee extension

- contributes to correct tracking of the patella

44
Q

hamstrings group action

A
  • flex the leg at the knee (opposite of the knee)

- extends thigh at the hip

45
Q

tibialis anterior action

A
  • dorsiflexion

- inversion

46
Q

extensor digitorum longus action

A

-extends digits (II-V)

47
Q

gastrocnemius action

A
  • plantar flexes the foot at the ankle joint

- flexes the leg at the knee joint

48
Q

soleus action

A

-plantar flexion of foot

49
Q

tibialis posterior action

A
  • invert and plantar flex
  • flex digits II-V
  • flex the hallux
50
Q

flexor hallucis longus action

A

-flexes the hallux

Anatomy (41 decks)

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