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human anatomy muscles > Axial Muscles > Flashcards

Axial Muscles Flashcards

1
Q

what muscles elevate the corner of the mouth?

A

zygomaticus major and minor

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2
Q

what muscle closes the eyelids?

A

orbicularis oculi

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3
Q

what muscle closes the lips?

A

orbicularis oris

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4
Q

what muscle pulls the lips down and opens the mouth

A

platysma

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5
Q

what muscle elevates the eyebrows?

A

frontalis

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6
Q

what muscle keeps food in the oral cavity and causes sucking and blowing?

A

buccinator

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7
Q

what is the action of the zygomaticus major and minor?

A

elevates corner of the mouth

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8
Q

what is the action of the orbicularis oculi?

A

closes eyelids

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9
Q

what is the action of the orbicularis oris?

A

closes lips

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10
Q

what is the action of the platysma?

A

pulls lips down, opens mouth

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11
Q

what is the action of the frontalis?

A

elevates eyebrows

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12
Q

what is the action of the buccinator?

A

keeps food in oral cavity, sucking, blowing

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13
Q

what nerve innervates facial muscles?

A

CN VII (facial nerve)

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14
Q

what muscles raises the eyelid?

A

levator palpebrae superioris

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15
Q

what muscle elevates the eye?

A

superior rectus

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16
Q

what muscle rotates the eye medially?

A

medial rectus

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17
Q

what muscle depresses the eye?

A

inferior rectus

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18
Q

what muscle is involved in extorsion, elevation, and abduction of the eye?

A

inferior oblique

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19
Q

what muscle is involved in intorsion, depression, and abduction of the eye?

A

superior oblique

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20
Q

what muscle abducts/laterally rotates the eye?

A

lateral rectus

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21
Q

what is the action of the levator palpebrae superioris?

A

raises eyelid

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22
Q

action of superior rectus?

A

elevates eye

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23
Q

action of medial rectus?

A

rotates eye medially

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24
Q

action of inferior rectus?

A

depresses eye

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25
Q

action of inferior oblique?

A

extorsion, elevation, abduction of eye

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26
Q

action of superior oblique?

A

intorsion, depression, abduction of eye

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27
Q

action of lateral rectus?

A

abducts eye (rotates laterally)

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28
Q

what muscles are innverated by CN III (oculomotor nerve)?

A

all eye muscles EXCEPT superior oblique and lateral rectus

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29
Q

what muscle protrudes tongue and side to side movement?

A

genioglossus

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30
Q

what muscle depresses tongue?

A

hyoglossus

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31
Q

what muscle pulls tongue up and back?

A

styloglossus

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32
Q

what muscle helps initiate swallowing?

A

palatoglossus

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33
Q

action of genioglossus?

A

protude tongue and side to side movement

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34
Q

action of hyoglossus?

A

depress tongue

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35
Q

action of styloglossus?

A

pulls tongue up and back

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36
Q

action of palatoglossus?

A

helps initiate swallowing

37
Q

what muscles are innervated by CN IX (hypoglossus nerve)?

A

genioglossus, hyoglossus, styloglossus

38
Q

what muscle is innervated by CN X (vagus nerve)?

A

palatoglossus

39
Q

what muscle opens the mandible when hyoid is fixed?

A

digastric

40
Q

what muscle depresses hyoid?

A

sternoHyoid

41
Q

what muscle depresses larynx?

A

sternoTHyroid

42
Q

what muscle draws hyoid bone backwards and elevates tongue?

A

stylohyoid

43
Q

what muscle is involved in swallowing food?

A

pharyngeal constrictors

44
Q

action of digastric?

A

opens mandible when hyoid is fixed

45
Q

action of sternoHyoid?

A

depresses hyoid

46
Q

action of sternoTHyroid?

A

depresses larynx

47
Q

action of stylohyoid?

A

draws hyoid bone backwards and elevates tongue

48
Q

action of pharyngeal constrictors?

A

involved in swallowing food

49
Q

what nerves innervate the digastric?

A

anterior belly (CN V3) and posterior belly (CNVII)

50
Q

what muscles do the ansa cervicalis innervate?

A

sternohyoid and sternothyroid

51
Q

what nerve innvervates the stylohyoid?

A

CN VII (facial nerve)

52
Q

waht nerve innervates the pharyngeal constrictors?

A

CN X - vagus nerve

53
Q

what are the muscles of mastication?

A

TMBPP. Temporalis, masseter, medial pterygoid, lateral pterygoid, buccinator

54
Q

what muscles elevate the mandible and cause side to side movement?

A

temporalis, masseter, medial pterygoid

55
Q

what muscles depresses the mandible and helps with side to side movement?

A

lateral pterygoid

56
Q

what muscle rotates the head?

A

sternocleidomastoid

57
Q

what muscle extends the neck?

A

trapezius

58
Q

what muscles flex neck laterally and aid in inspiration?

A

scalenus anterior, medius, minimus

59
Q

action of sternocleidomastoid?

A

rotates head

60
Q

action of trapezius?

A

extends neck

61
Q

action of scalenes anterior, medius, and minimus?

A

flex neck laterally; aid in inspiration

62
Q

what muscles are innervated by CN XI (spinal accessory nerve)?

A

sternocleidomastoid & trapezius

63
Q

what muscle is the prime mover of inspiration and separates thoracic and abdominal cavities?

A

diaphragm

64
Q

what muscle elevates ribs during inspiration?

A

external intercostals

65
Q

what muscle depresses ribs during forces expiration?

A

internal intercostals

66
Q

action of diaphragm?

A

prime mover of inspiration; separates thoracic and abdominal cavities

67
Q

action of external intercostals?

A

elevation of ribs during inspiration

68
Q

action of internal intercostals?

A

depression of ribs during forced expiration

69
Q

what nerves innervate the diaphragm?

A

C3-5; phrenic nerve

70
Q

what muscle flexes the vertebral column and compresses the abdominal wall?

A

rectus abdominis

71
Q

what muscles compress the abdominal wall?

A

rectus abdominis, transverse abdominal, external and internal abdominal obliques

72
Q

what muscles lateral rotate trunk?

A

external and internal obliques

73
Q

action of rectus abdominis?

A

flexes vertebral column, compresses abdominal wall

74
Q

action of transverse abdominal?

A

compresses abdominal wall

75
Q

action of external and internal obliques?

A

compress abdominal wall, laterally rotate trunk

76
Q

what muscle elevates and medially rotates scapula?

A

levator scapulae

77
Q

what muscles stabilize shoulder and retract scapula?

A

rhomboid major and rhomboid minor

78
Q

what muscles straighten spine?

A

erector spinae (iliocostalis, longissimus, spinalis)

79
Q

what muscle stabilizes adjacent vertebrae?

A

multifidus

80
Q

what muscle is involved in lateral flexion or extension of vertebral column and aids in respiration by stabilizing the diaphragm and rib 12?

A

quadratus lumborum

81
Q

action of levator scapulae?

A

elevates scapula and medially rotates

82
Q

action of rhomboid major and minor?

A

stabilizes shoulder, retract scapula

83
Q

action of erector spinae?

A

straightens spine

84
Q

muscles of erector spinae group?

A

iliocostalis, longissmus, spinalis

85
Q

action of multifidus?

A

stabilizes adjacent vertebrae

86
Q

action of quadratus lumborum?

A

lateral flexion or extension of vertebral column; aids in respiation by stabilizing the diaphragm and rib 12

87
Q

what muscles are innervated by dorsal scapular nerve?

A

levator scapulae, rhomboid major, rhomboid minor

88
Q

what are the muscles of facial expression

A

frontalis, orbicularis oculi, orbicularis oris, zygomaticus major and minor

human anatomy muscles (5 decks)

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