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Spinal Lab > Muscle Actions > Flashcards

Muscle Actions Flashcards

1
Q

Frontalis belly, epicranius

A

Pulls scalp forward; wrinkles forehead and 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 and anterior nasal aperture

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6
Q

Depressor septi

A

Widens nostril

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7
Q

Corrugator supercilii

A

Draws eyebrow medial and down (forms vertical furrow between eyebrows)

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8
Q

Levator labii superioris

A

Raises and everts upper lip

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9
Q

Levator labii superioris alaeque nasi

A

Raises and everts upper lip; dilates nostril

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10
Q

Zygomaticus minor

A

Raises upper lip, produces nasolabial groove

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11
Q

Zygomaticus major

A

Draws angle of mouth up and out

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12
Q

Levator anguli oris

A

Raises angle of mouth; produces nasolabial groove

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13
Q

Orbicularis oris

A

Close mouth; purse and protrude lips

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14
Q

Buccinator

A

Compress cheeks against teeth

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15
Q

Risorius

A

Draws back angle of mouth

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16
Q

Mentalis

A

Raises and protrudes lower lip

17
Q

Depressor labii inferioris

A

Draws lower lip down

18
Q

Depressor anguli oris

A

Draws corner of mouth down and out

19
Q

Levator palpebra superioris

A

Elevates upper eyelid

20
Q

Superior rectus

A

Elevate and adduct eye the cornea; intorsion

21
Q

Inferior rectus

A

Depress and adduct the cornea; extorsion

22
Q

Medial rectus

A

Adducts cornea

23
Q

Lateral rectus

A

Abducts cornea

24
Q

Superior oblique

A

Depress and abduct the cornea; intorsion

25
Q

Inferior oblique

A

Elevate and abduct the cornea; extorsion

26
Q

Temporalis

A

Elevate and retract mandible

27
Q

Masseter

A

Elevate and protract mandible

28
Q

Medial pterygoid

A

Elevate and protract mandible; assists in gliding or rotary movement

29
Q

Lateral pterygoid

A

Protract mandible; pulls disc forward; depress chin and assist in gliding or rotatory movement

Spinal Lab (3 decks)

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