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Spinal Practical 2 Innervation's and actions > Muscle actions > Flashcards

Muscle actions Flashcards

1
Q

A: Frontalis Belly, Epicranius

A

pulls scalp forward; wrinkles forehead & raises

eyebrows

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2
Q

A: Occipitalis Belly, Epicranius

A

pulls scalp backward

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3
Q

A: Procerus

A

depress eyebrows medially

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4
Q

A: Compressor Naris

A

compress cartilage at bridge of nose

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5
Q

A: Dilatator Naris

A

widens, dilates nostrils & anterior nasal aperture

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6
Q

A: Depressor Septi

A

widens nostril

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7
Q

A: Corrugator Supercilii

A

draws eyebrow medial & down (forms vertical furrow

between eyebrows)

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8
Q

A: Levator Labii Superioris

A

raises & everts upper lip

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9
Q

A: Levator Labii Superioris Alaeque

Nasi

A

raises & everts upper lip; dilates nostril

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10
Q

A: Zygomaticus Minor

A

raises upper lip; produces nasolabial groove

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11
Q

A: Zygomaticus Major

A

draws angle of mouth up and out

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12
Q

A: Levator Anguli Oris

A

raises angle of mouth; produces nasolabial groove

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13
Q

A: Orbicularis Oris

A

close mouth; purse & protrude lips

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14
Q

A: Buccinator

A

compress cheeks against teeth

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15
Q

A: Risorius

A

draws back angle of mouth

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16
Q

A: Mentalis

A

raises & protrudes lower lip

17
Q

A: Depressor Labii Inferioris

A

draws lower lip down

18
Q

A: Depressor Anguli Oris

A

draws corner of mouth down & out

19
Q

A: Levator Palpebra Superioris

A

elevates upper eyelid

20
Q

A: Superior Rectus

A

elevate & adduct the cornea; intorsion

21
Q

A: Inferior Rectus

A

depress & adduct the cornea; extorsion

22
Q

A: Medial Rectus

A

adducts cornea

23
Q

A: Lateral Rectus

A

abducts cornea

24
Q

A: Superior Oblique

A

depress & abduct the cornea; intorsion

25
Q

A: Inferior Oblique

A

elevate & abduct the cornea; extorsion

26
Q

A: Temporalis

A

elevate & retract mandible

27
Q

A: Masseter

A

elevate & protract mandible

28
Q

A: Medial Pterygoid

A

elevate & protract mandible; assists in gliding or rotatory movement

29
Q

A: Lateral Pterygoid

A

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

Spinal Practical 2 Innervation's and actions (2 decks)

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