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Spinal Muscles > Actions 2 > Flashcards

Actions 2 Flashcards

1
Q

frontalis belly, epicranius

A

pulls scalp forward; wrinkles forehead & raises eyebrows

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2
Q

occipitalis belly, epicranius

A

pulls scalp backward

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3
Q

procerus

A

depress eyebrows medially

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4
Q

compressor naris

A

compress cartilage at bridge of nose

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5
Q

dilatator naris

A

widens, dilates nostrils & anterior nasal aperture

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6
Q

corrugator supercilii

A

draws eyebrow medial & down (forms vertical furrow between eyebrows)

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7
Q

levator labii superioris

A

raises & everts upper lip

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8
Q

levator labii superioris alaeque nasi

A

raises & everts upper lip; dilates nostril

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9
Q

zygomaticus minor

A

raises upper lip; produces nasolabial groove

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10
Q

zygomaticus major

A

draws angle of mouth up and out

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11
Q

levator anguli oris

A

raises angle of mouth; produces nasolabial groove

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12
Q

orbicularis oris

A

close mouth; purse & protrude lips

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13
Q

buccinator

A

compress cheeks against teeth

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14
Q

risorius

A

draws back angle of mouth

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15
Q

mentalis

A

raises & protrudes lower lip

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16
Q

depressor labii inferioris

A

draws lower lip down

17
Q

depressor anguli oris

A

draws corner of mouth down & out

18
Q

levator palpebra superioris

A

elevates upper eyelid

19
Q

superior rectus

A

elevate & adduct the cornea; intorsion

20
Q

inferior rectus

A

depress & adduct the cornea; extorsion

21
Q

medial rectus

A

adducts cornea

22
Q

lateral rectus

A

abducts cornea

23
Q

superior oblique

A

depress & abduct the cornea; intorsion

24
Q

inferior oblique

A

elevate & abduct the cornea; extorsion

25
Q

temporalis

A

elevate & retract mandible

26
Q

masseter

A

elevate & protract mandible

27
Q

medial pterygoid

A

elevate & protract mandible; assists in gliding or rotatory movement

28
Q

lateral pterygoid

A

protracts mandible; pulls disc forward; depress chin & assist in gliding or rotatory movement

Spinal Muscles (4 decks)

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