Actions Practical 2

Question 1

Frontalis Belly, Epicranius

Answer 1

Pulls scalp forward; wrinkles forehead & raises eyebrows

Question 2

Occipitalis Belly, Epicranius

Answer 2

Pulls scalp forward

Question 3

Procerus

Answer 3

Depress eyebrows medially

Question 4

Compressor Naris

Answer 4

Compress cartilage at bridge of nose

Question 5

Dilatator Naris

Answer 5

Widens, dilates nostrils & anterior nasal aperture

Question 6

Depressure Septi

Answer 6

Widens nostril

Question 7

Corrugator Supercilii

Answer 7

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

Question 8

Levator Labii Superioris

Answer 8

Raises & everts upper lip

Question 9

Levator Labii Superioris Alaequa Nasi

Answer 9

Raises & everts upper lip; dilates nostril

Question 10

Zygomaticus Minor

Answer 10

Raises upper lip; produces nasolabial groove

Question 11

Zygomaticus Major

Answer 11

Draws angle of mouth up and out

Question 12

Levator Anguli Oris

Answer 12

Raises angle of mouth; produces nasolabial groove

Question 13

Orbicularis Oris

Answer 13

Close mouth; purse & protrude lips

Question 14

Buccinator

Answer 14

Compress cheeks against teeth

Question 15

Risorius

Answer 15

Draws back angle of mouth

Question 16

Mentalis

Answer 16

Raises & protrudes lower lip

Question 17

Depressor Labii Inferioris

Answer 17

Draws lower lip down

Question 18

Depressor Anguli Oris

Answer 18

Draws corner of mouth down & out

Question 19

Levator Palpebra Superioris

Answer 19

Elevates upper eyelid

Question 20

Superior Rectus

Answer 20

Elevate & adduct the cornea; intorsion

Question 21

Inferior Rectus

Answer 21

Depress & adduct the cornea; extorsion

Question 22

Medial Rectus

Answer 22

Adducts cornea

Question 23

Lateral Rectus

Answer 23

Abducts cornea

Question 24

Superior Oblique

Answer 24

Depress & abduct the cornea; intorsion

Question 25

Inferior Oblique

Answer 25

Elevate & abduct the cornea; extorsion

Question 26

Temporalis

Answer 26

Elevate & retract mandible

Question 27

Masseter

Answer 27

Elevate & protract mandible

Question 28

Medial Pterygoid

Answer 28

Elevate & protract mandible; assists in gliding or rotatory movement

Question 29

Lateral Pterygoid

Answer 29

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