Muscles Of Facial Expression

Question 1

List 2 oral muscles

Answer 1

Orbicularis oris
Buccinator

Question 2

What is the function of the Orbicularis oris

Answer 2

Closes lips

Question 3

What is the function of the Buccinator

Answer 3

Pulls the cheek inwards against teeth and aids in mastication

Question 4

What is the innervation of the Orbicularis oris

Answer 4

Buccal and mandibular branches of the facial nerve

Question 5

What is the innervation of the Buccinator

Answer 5

Buccal branches of the facial nerve

Question 6

List 3 of the nasal muscles

Answer 6

Nasalis
Procerus
Depressor septi nasi

Question 7

What is the function of the Nasalis

Answer 7

Transverse part - compresses the nasal opening
Alar part - widens the nasal opening

Question 8

What is the function of the Procerus

Answer 8

Pulls the eyebrows downwards to produce wrinkles over the nose (frowning)

Question 9

What is the function of the depressor septi nasi

Answer 9

Pulls the nasal septum down to widen the nasal opening

Question 10

What is the innervation of the Nasalis

Answer 10

Buccal branches of the facial nerve

Question 11

What is the innervation of the Procerus

Answer 11

Temporal branches of the facial nerve

Question 12

What is the innervation of the depressor septi nasi

Answer 12

Buccal branches if the facial nerve

Question 13

List 3 orbital muscles

Answer 13

Orbicularis oculi
Corrugator supercilii
Depressor supercilii

Question 14

What is the function of the orbicularis oculi

Answer 14

Palpebral part - gently closes the eyelids
Lacrimal part - drainage of tears
Orbital part - tightly closes the eyelids

Question 15

What is the function of the Corrugator supercilii

Answer 15

Brings eyebrows together creating a vertical wrinkling along the bridge of the nose

Question 16

What is the function of the depressor supercilii

Answer 16

Depression of the eyebrows

Question 17

What is the innervation of the orbicularis oculi

Answer 17

Temporal and zygomatic branches of the facial nerve

Question 18

What is the innervation of the Corrugator supercilii

Answer 18

Temporal branches of the facial nerve

Question 19

What is the innervation of the depressor supercilii

Answer 19

Temporal facial nerve

Question 20

List 3 Auricular facial muscles

Answer 20

Auricular anterior
Auricular superior
Auricular posterior

Question 21

What is the function of the Auricular anterior

Answer 21

Moves the auricle forward

Question 22

What is the function of the Auricular superior

Answer 22

Moves the auricle superiorly/upward and back

Question 23

What is the function of the Auricular posterior

Answer 23

Moves the auricle posteriorly/backwards

Question 24

What is the innervation of the Auricular anterior

Answer 24

Temporal facial nerve

Question 25

What is the innervation of the Auricular superior

Answer 25

Temporal facial nerve

Question 26

What is the innervation of the Auricular posterior

Answer 26

Temporal facial nerve

Question 27

What is the neck muscle called

Answer 27

Platysma

Question 28

What is the function of the Platysma

Answer 28

Lateral fibres - lowering the corners of the mouth and lower lip Medial attachment - depresses the mandible and opens the mouth

Question 29

What is the innervation of the Platysma

Answer 29

Cervical facial nerve

Question 30

List the 2 scalp muscles

Answer 30

Temporalis Occipitalfrontalis

Question 31

What is the function of the Temporalis

Answer 31

To elevate the mandible Aid in closing of the jaw Moving jaw side to side

Question 32

What is the innervation of the Temporalis

Answer 32

Temporal branches of the facial nerve

Question 33

What is the function of the Occipitalfrontalis

Answer 33

Occipital belly - retracts the scalp Frontal belly - elevates eyebrows and wrinkles skin on the forehead

Question 34

What is the innervation of the Occipitalfrontalis

Answer 34

Temporal branches of the facial nerve