Muscles and Action Lab practical 2

Question 0

occipitalis belly, epicranius

Answer 0

pulls scalp backward

Question 1

frontalis belly, epicranius

Answer 1

pulls scalp forward; wrinkles forehead and raises eyebrows

Question 2

procerus

Answer 2

depress eyebros medially

Question 3

compressor naris

Answer 3

compress cartilage at bridge of nose

Question 4

dialator naris

Answer 4

widens, dilates nostrils and anterior nasal aperutre

Question 5

depressor septi

Answer 5

widens nostril

Question 6

corrugator supercilii

Answer 6

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

Question 7

levator labii superioris

Answer 7

raises and everts upper lip

Question 8

levator labii superioris alaeque Nasi

Answer 8

raises and everts upper lip; dilates nostril

Question 9

Zygomaticus minor

Answer 9

raises upper lip; produces nasolabial groove

Question 10

zygomaticus major

Answer 10

draws angle of mouth up and out

Question 11

levator anguli oris

Answer 11

raises angle of mouth; produces nasolabial groove

Question 12

orbicularis oris

Answer 12

close mouth; purse and protrude lips

Question 13

buccinator

Answer 13

compress cheeks against teeth

Question 14

risorius

Answer 14

draws back angle of mouth

Question 15

mentalis

Answer 15

raises and protrudes lower lip

Question 16

depressor labii inferioris

Answer 16

draws lower lip down

Question 17

depressor anguli oris

Answer 17

draws corner of mouth down and out

Question 18

levator palpebra superioris

Answer 18

elevates upper eyelid

Question 19

superior rectus

Answer 19

elevate and adduct the cornea; intorsion

Question 20

inferior rectus

Answer 20

depress and adduct the cornea; extorsion

Question 21

medial rectus

Answer 21

adducts cornea

Question 22

lateral rectus

Answer 22

abducts cornea

Question 23

superior oblique

Answer 23

depress and abduct the cornea; intorsion

Question 24

inferior oblique

Answer 24

elevate and abduct the cornea; extorsion

Question 25

temporalis

Answer 25

elevate and retract mandible

Question 26

messeter

Answer 26

elevate and protract mandible

Question 27

medial pterygoid

Answer 27

elevate and protract mandible; assists in gliding or rotatory movement

Question 28

lateral pterygoid

Answer 28

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