Facial Oral Anatomy Muscles Insertion and Action

Question 1

What nerve are the facial muscles controlled by?

Answer 1

VII (7)

Question 2

What are the muscles of facial expression

Answer 2

Epicranius, Orbicularis oculi, corrugator supercilii, procerus

Question 3

What is the action of the epicranius?

Answer 3

Raise eyebrows and scalp

Question 4

What is the nerve that controls the epicranius?

Answer 4

VII (7)

Question 5

What is the action of the orbicularis oculi?

Answer 5

Close the eye lid. “squinting”

Question 6

What is the nerve that controls the orbicularis oculi?

Answer 6

VII (7)

Question 7

What is the action of the corrugator supercilii?

Answer 7

Moves the skin of the eyebrow medial and inferior (vertical wrinkles in the forehead)

Question 8

What is the nerve that controls the corrugator supercilii?

Answer 8

VII (7)

Question 9

What is the action of the procerus?

Answer 9

Horizontal wrinkles between the eyebrows (on the forehead)

Question 10

What is the nerve that controls the procerus?

Answer 10

VII (7)

Question 11

What is the action of the levator labii superioris alaeque nasi (LLSAN)?

Answer 11

Flaring of the nares

Question 12

What is the nerve that controls the labii superioris alaeque nasi (LLSAN)?

Answer 12

VII (7)

Question 13

what is the action of the levator labii superioris (LLS)?

Answer 13

Elevates the upper lip

Question 14

What is the nerve that controls the levator labii superioris (LLS)?

Answer 14

VII (7)

Question 15

What is the action of the zygomaticus major?

Answer 15

SMILE

Pulls angle of mouth superior and aterally

Question 16

What is the nerve that controls the zygomaticus major?

Answer 16

VII (7)

Question 17

What is the action of the zygomaticus minor?

Answer 17

SMILE

Pulls angle of the mouth superior and lateral

Question 18

What is the nerve that controls the zygomaticus minor?

Answer 18

VII (7)

Question 19

What is the action of the levator anguli oris?

Answer 19

Pulls angle of mouth superior and lateral

Question 20

What is the nerve that controls the levator anguli oris?

Answer 20

VII (7)

Question 21

What is the action of the risorius?

Answer 21

Widens the mouth (pulls the corners laterally)

Question 22

What is the nerve that controls the risorius?

Answer 22

VII (7)

Question 23

What facial muscle isn’t attached to the bone?

Answer 23

Risorius

Question 24

What are the action of the buccinator?

Answer 24

1. Pulls angle of the mouth laterally
2. Shortens cheek vertically
3. Shortens cheek horizontally

Question 25

What muscle of the facial muscles is an accessory to mastication?

Answer 25

Buccinator

Question 26

What muscle of the facial muscles have 3 actions?

Answer 26

Buccinator

Question 27

What muscle does these actions? 1. Pulls angle of the mouth laterally 2. Shortens cheek vertically 3. Shortens cheek horizontally

Answer 27

Buccinator

Question 28

What muscle is NOT a muscle of mastication?

Answer 28

Buccinator

Question 29

What nerve controls the buccinator?

Answer 29

VII (7)

Question 30

What is the action of the orbicularis oris?

Answer 30

Closes the lips

Question 31

What is the nerve that controls the orbicularis oris?

Answer 31

VII (7)

Question 32

What is the action for the depressor anguli oris?

Answer 32

Depress angle of the mouth

Question 33

What is the nerve that controls the depressor anguli oris?

Answer 33

VII (7)

Question 34

What is the action for the depressor labii inferioris?

Answer 34

Depresses the lower lip

Question 35

What is the nerve that controls the depressor labii inferioris?

Answer 35

VII (7)

Question 36

what is the action for the mentalis?

Answer 36

elevates skin at the chin which will protrude the lip

Question 37

What is the nerve that controls the mentalis?

Answer 37

VII (7)

Question 38

What is the action of the platysma?

Answer 38

raises the skin of the neck and pulls corners of the mouth down

Question 39

What is the nerve that controls the platysma?

Answer 39

VII (7)