Lab 2 - Actions Flashcards Preview

Spinal Anatomy II > Lab 2 - Actions > Flashcards

Flashcards in Lab 2 - Actions Deck (29)
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1

frontalis belly, epicranius

-pulls scalp forward
-wrinkles foreheard
-raises eyebrows

2

occipitalis belly, epicranius

pulls scalp backward

3

procerus

depress eyebrows medially

4

compressor naris

compress cartilage at bridge of nose

5

dilatator naris

widens, dilates nostrils and anterior nasal aperture

6

depressor septi

widens nostril

7

corrugator supercilii

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

8

levator labii superioris

raises and everts upper lip

9

levator labii superioris alaeque nasi

-raises and everts upper lip
-dilates nostril

10

zygomaticus minor

-raises upper lip
-produces nasolabial groove

11

zygomaticus major

draws angle of mouth up and out

12

levator anguli oris

-raises angle of mouth
-produces nasolabial groove

13

orbicularis oris

-close mouth
-purse and protrude lips

14

buccinator

compress cheeks against teeth

15

risorius

draws back angle of mouth

16

mentalis

raises and protrudes lower lip

17

depressor labii inferioris

draws lower lip down

18

depressor anguli oris

draws corner of mouth down and out

19

levator palpebra superioris

elevates upper eyelid

20

superior rectus

-elevate and adduct the cornea
-intorsion

21

inferior rectus

-depress and adduct the cornea
-extorsion

22

medial rectus

adducts cornea

23

lateral rectus

abducts cornea

24

superior oblique

-depresses and abduct the cornea
-intorsion

25

inferior oblique

-elevate and abduct the cornea
-extorsion

26

temporalis

elevate and retract mandible

27

masseter

elevate and protract mandible

28

medial pterygoid

-elevate and protract mandible
-assists in gliding or rotatory movement

29

lateral pterygoid

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