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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
action of inferior oblique?
extorsion, elevation, abduction of eye
26
action of superior oblique?
intorsion, depression, abduction of eye
27
action of lateral rectus?
abducts eye (rotates laterally)
28
what muscles are innverated by CN III (oculomotor nerve)?
all eye muscles EXCEPT superior oblique and lateral rectus
29
what muscle protrudes tongue and side to side movement?
genioglossus
30
what muscle depresses tongue?
hyoglossus
31
what muscle pulls tongue up and back?
styloglossus
32
what muscle helps initiate swallowing?
palatoglossus
33
action of genioglossus?
protude tongue and side to side movement
34
action of hyoglossus?
depress tongue
35
action of styloglossus?
pulls tongue up and back
36
action of palatoglossus?
helps initiate swallowing
37
what muscles are innervated by CN IX (hypoglossus nerve)?
genioglossus, hyoglossus, styloglossus
38
what muscle is innervated by CN X (vagus nerve)?
palatoglossus
39
what muscle opens the mandible when hyoid is fixed?
digastric
40
what muscle depresses hyoid?
sternoHyoid
41
what muscle depresses larynx?
sternoTHyroid
42
what muscle draws hyoid bone backwards and elevates tongue?
stylohyoid
43
what muscle is involved in swallowing food?
pharyngeal constrictors
44
action of digastric?
opens mandible when hyoid is fixed
45
action of sternoHyoid?
depresses hyoid
46
action of sternoTHyroid?
depresses larynx
47
action of stylohyoid?
draws hyoid bone backwards and elevates tongue
48
action of pharyngeal constrictors?
involved in swallowing food
49
what nerves innervate the digastric?
anterior belly (CN V3) and posterior belly (CNVII)
50
what muscles do the ansa cervicalis innervate?
sternohyoid and sternothyroid
51
what nerve innvervates the stylohyoid?
CN VII (facial nerve)
52
waht nerve innervates the pharyngeal constrictors?
CN X - vagus nerve
53
what are the muscles of mastication?
TMBPP. Temporalis, masseter, medial pterygoid, lateral pterygoid, buccinator
54
what muscles elevate the mandible and cause side to side movement?
temporalis, masseter, medial pterygoid
55
what muscles depresses the mandible and helps with side to side movement?
lateral pterygoid
56
what muscle rotates the head?
sternocleidomastoid
57
what muscle extends the neck?
trapezius
58
what muscles flex neck laterally and aid in inspiration?
scalenus anterior, medius, minimus
59
action of sternocleidomastoid?
rotates head
60
action of trapezius?
extends neck
61
action of scalenes anterior, medius, and minimus?
flex neck laterally; aid in inspiration
62
what muscles are innervated by CN XI (spinal accessory nerve)?
sternocleidomastoid & trapezius
63
what muscle is the prime mover of inspiration and separates thoracic and abdominal cavities?
diaphragm
64
what muscle elevates ribs during inspiration?
external intercostals
65
what muscle depresses ribs during forces expiration?
internal intercostals
66
action of diaphragm?
prime mover of inspiration; separates thoracic and abdominal cavities
67
action of external intercostals?
elevation of ribs during inspiration
68
action of internal intercostals?
depression of ribs during forced expiration
69
what nerves innervate the diaphragm?
C3-5; phrenic nerve
70
what muscle flexes the vertebral column and compresses the abdominal wall?
rectus abdominis
71
what muscles compress the abdominal wall?
rectus abdominis, transverse abdominal, external and internal abdominal obliques
72
what muscles lateral rotate trunk?
external and internal obliques
73
action of rectus abdominis?
flexes vertebral column, compresses abdominal wall
74
action of transverse abdominal?
compresses abdominal wall
75
action of external and internal obliques?
compress abdominal wall, laterally rotate trunk
76
what muscle elevates and medially rotates scapula?
levator scapulae
77
what muscles stabilize shoulder and retract scapula?
rhomboid major and rhomboid minor
78
what muscles straighten spine?
erector spinae (iliocostalis, longissimus, spinalis)
79
what muscle stabilizes adjacent vertebrae?
multifidus
80
what muscle is involved in lateral flexion or extension of vertebral column and aids in respiration by stabilizing the diaphragm and rib 12?
quadratus lumborum
81
action of levator scapulae?
elevates scapula and medially rotates
82
action of rhomboid major and minor?
stabilizes shoulder, retract scapula
83
action of erector spinae?
straightens spine
84
muscles of erector spinae group?
iliocostalis, longissmus, spinalis
85
action of multifidus?
stabilizes adjacent vertebrae
86
action of quadratus lumborum?
lateral flexion or extension of vertebral column; aids in respiation by stabilizing the diaphragm and rib 12
87
what muscles are innervated by dorsal scapular nerve?
levator scapulae, rhomboid major, rhomboid minor
88
what are the muscles of facial expression
frontalis, orbicularis oculi, orbicularis oris, zygomaticus major and minor

human anatomy muscles (5 decks)

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