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muscular system Flashcards

1
Q

Epicranius (head and neck)

A

frontalis & occipitalis, epicranial aponeurosis

raises eyebrows

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2
Q

orbicularis oculi

A

closes eye

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3
Q

levator palpebrae superioris

A

opens eye

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4
Q

corrugator supercilii

A

draws eyebrows together when frowning

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5
Q

orbicularis oris

A

closes lips (kissing)

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6
Q

zygomaticus major

A

raises corner of mouth upwards (smiling)

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7
Q

buccinator

A

compresses cheek (whistling)

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8
Q

platysma

A

tenses skin of neck when shaving-pouting

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9
Q

superior rectus

A

Elevates and turns eye medially

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10
Q

inferior rectus

A

Depresses and turns eye medially

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11
Q

medial rectus

A

moves eye medially

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12
Q

lateral rectus

A

moves eye laterally

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13
Q

superior oblique

A

Depresses eye and turns it laterally

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14
Q

inferior oblique

A

Elevates eye and turns it laterally

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15
Q

temporalis

A

Closes Jaw

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16
Q

masseter

A

Prime Mover of jaw closure

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17
Q

pterygoids (medial & lateral)

A

protrude mandible and side-to-side grinding of lower teeth

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18
Q

sternocleidomastoid

A

Flexes and laterally rotates head

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19
Q

splenius capitis

A

Extends or Hyperextends head

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20
Q

diaphragm

A

Prime mover of inspiration

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21
Q

intercostals (external and internal)

A

draw ribs together

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22
Q

external oblique

A

Flex spine, rotate trunk, flex laterally, compress viscera

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23
Q

internal oblique

A

Flex spine, rotate trunk, flex laterally, compress viscera

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24
Q

transverse abdominus

A

Compress abdominal contents

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25
Q

rectus abdominis

A

flex and rotate lumbar spine

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26
Q

erector spinae

A

Prime mover of (etebral/spine (back) extension

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27
Q

ischiocavernosus

A

Retards venous drainage and maintains erection of penis and clitoris

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28
Q

bulbospongiosus

A

Empties male urethra

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29
Q

levator ani: pubococcygeus & iliococcygeus

A

Supports pelvic viscera, anal and vaginal sphincters

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30
Q

coccygeus

A

Supports pelvic viscera

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31
Q

pectoralis minor

A

Draws scapula forward and down

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32
Q

serratus anterior

A

Rotates scapula laterally and upward (punching)

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33
Q

levator scapulae

A

Elevates/adducts scapula

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34
Q

trapezius

A

Rotates, raises and retracts scapula

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35
Q

rhomboideus minor

A

Stabilize scapula, retract (adduct) scapula as in

36
Q

rhomboideus major

A

“squaring the shoulders”

37
Q

pectoralis major

A

Prime mover of arm flexion, rotates arm medially and adducts arm

38
Q

latissimus dorsi

A

Prime mover of arm extension, adducts and medially rotates

39
Q

deltoid

A

Prime mover of arm abduction

40
Q

supraspinatus

A

Initiates abduction of arm (humerus)

41
Q

infraspinatus

A

Rotates arm laterally

42
Q

teres minor

A

Rotates arm laterally

43
Q

subscapularis

A

Rotates arm medially

44
Q

brachialis

A

A major elbow (forearm) flexor

45
Q

biceps brachii

A

Flexes elbow and supinates forearm (rotates hand laterally)

46
Q

triceps brachii

A

Prime mover of elbow extension (forearm)

47
Q

brachioradialis

A

Synergist in flexing forearm

48
Q

pronator quadratus

A

Prime mover of forearm pronation

49
Q

pronator teres

A

Pronates forearm

50
Q

supinator

A

Supinates forearm

51
Q

flexor carpi radialis

A

Flexes wrist and abducts hand

52
Q

flexor carpi ulnaris

A

Flexes wrist and adducts hand

53
Q

extensor carpi radialis longus

A

Extends and abducts wrist

54
Q

extensor carpi radialis brevis

A

Extends and abducts wrist

55
Q

extensor digitorum

A

Prime mover of finger extension

56
Q

extensor carpi unlaris

A

Extends and adducts wrist

57
Q

Iliacus

A

Prime mover for flexing thigh (hip joint) or flexing trunk at thigh

58
Q

Psoas

A

Same as above plus flexes vertebral column laterally

59
Q

tensor fasciae latae

A

braces knee when walking

60
Q

gluteus maximus

A

Major thigh extensor

61
Q

gluteus maximus

A

Major thigh extensor

62
Q

gluteus medius

A

Abducts and medially rotates thigh

63
Q

piriformis

A

laterally rotates extended thigh, abducts flexed thigh

64
Q

piriformis

A

laterally rotates extended thigh, abducts flexed thigh

65
Q

adductor brevis

A

Adduct and medially rotate and flex thigh

66
Q

adductor longus

A

Adduct and medially rotate and flex thigh

67
Q

adductor magnus

A

Adduct and medially rotate and flex thigh

68
Q

gracilis

A

Adducts thigh; flexes and medially rotates leg

69
Q

rectus femoris

A

Extends knee and flexes thigh at hip

70
Q

vastus lateralis

A

Extends and stabilizes knee

71
Q

vasus medialis

A

Extends knee

72
Q

vastus intermedius

A

Extends knee

73
Q

sartorius

A

Flexes, abducts and laterally rotates thigh; flexes knee (sitting cross legged)

74
Q

biceps femoris

A

Extends thigh and flexes knee

75
Q

semitendinosus

A

Extends thigh and flexes knee

76
Q

semimembranosus

A

Extends thigh and flexes knee

77
Q

extensor digitorum longus

A

Prime mover of toe extension

78
Q

extensor hallicus longus

A

Extends the big toe

79
Q

tibialis anterior

A

Prime mover of dorsiflexion

80
Q

gastrocnemius

A

Plantar flexes foot

81
Q

soleus

A

Plantar flexion

82
Q

flexor hallicus longus

A

Flexes big toe

83
Q

tibialis posterior

A

Prime mover of foot inversion

84
Q

fibularis (peroneus) brevis

A

Plantar flexes and everts foot

85
Q

fibularis (peroneus) longus

A

Plantar flexes and everts foot

86
Q

flexor digitorum longus

A

Flexes toes; plantar flexes and inverts foot

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