Lab 2 - Actions Flashcards Preview

Spinal Anatomy II > Lab 2 - Actions > Flashcards

Flashcards in Lab 2 - Actions Deck (29)
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1
Q

frontalis belly, epicranius

A
  • pulls scalp forward
  • wrinkles foreheard
  • raises eyebrows
2
Q

occipitalis belly, epicranius

A

pulls scalp backward

3
Q

procerus

A

depress eyebrows medially

4
Q

compressor naris

A

compress cartilage at bridge of nose

5
Q

dilatator naris

A

widens, dilates nostrils and anterior nasal aperture

6
Q

depressor septi

A

widens nostril

7
Q

corrugator supercilii

A

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

8
Q

levator labii superioris

A

raises and everts upper lip

9
Q

levator labii superioris alaeque nasi

A
  • raises and everts upper lip

- dilates nostril

10
Q

zygomaticus minor

A
  • raises upper lip

- produces nasolabial groove

11
Q

zygomaticus major

A

draws angle of mouth up and out

12
Q

levator anguli oris

A
  • raises angle of mouth

- produces nasolabial groove

13
Q

orbicularis oris

A
  • close mouth

- purse and protrude lips

14
Q

buccinator

A

compress cheeks against teeth

15
Q

risorius

A

draws back angle of mouth

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 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
  • depresses 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 rotatory movement

29
Q

lateral pterygoid

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