Face Musles Lec

Question 1

All facial muscles (not mastication) are innervated by what nerve

Answer 1

facial nerve - cranial nerve 7

has lots of branches

Question 2

what are the parts that make up the face

Answer 2

calvaria, floor of the cranial cavity, viscerocranium

Question 3

What is the pterion and what happens if you get hit there?

Answer 3

4 bones meet together, get hit go to sleep

Question 4

Orbicularis oculi

Answer 4

Palpebral part: gently shuts the eye
Orbital part: forcefully shuts the eye

Question 5

How many bones of the cranium are there

Answer 5

22

Question 6

*know the layers of muscles

Question 7

Occipitofrontalis

Answer 7

Wrinkles forehead, lifts eyebrows

Question 8

Nasalis

Answer 8

Transverse part: compresses nasal appetite
Alar part: flares the nostrils

Question 9

Procerus

Answer 9

Draws down medial angle of eyebrows, produces horizontal lines over nose

Question 10

Depressor Septi

Answer 10

Pull nose inferiorly (bunny nose)

Question 11

Depressor anguli oris

Answer 11

Frown

Question 12

Depressor labii inferioris

Answer 12

Draws bottom lip inferiorly and laterally

“Yikes”

Question 13

Mentalis

Answer 13

Raises and protrudes lower lip

Pout

Question 14

Corrugartor supercilii

Answer 14

Draws eyes medially and downward

Angry face, villain name

Question 15

Risorius

Answer 15

Retracts corners of mouth (half effort grin)

Question 16

Zygomaticus

Answer 16

Major: smile (corners of mouth up and away)

Minor: draws upper lip upward (showing teeth)

Question 17

Orbicularis oris

Answer 17

Closed lips, protrudes lips

Question 18

Buccinator

Answer 18

Presses cheek against teeth, compresses distended cheeks

Question 19

Platysma

Answer 19

Tenses skin of neck and can bring corners of mouth down

Question 20

Bell’s palsy

Answer 20

Bell’s palsy is a condition characterized by sudden, temporary weakness or paralysis of the muscles on one side of the face due to inflammation or compression of the facial nerve (cranial nerve VII).

Question 21

Stroke (CVA)

Answer 21

typically lower part of face is affected, sudden onset

Question 22

TMJ bone articulation

Answer 22

mandibular fossa on temporalis bone meets with mandibular condyle on mandible

Question 23

Articular disk lies between

Answer 23

mandibular fossa and mandibular condyle

Question 24

What is the function of the articular disc in the TMJ joint?

Answer 24

increases congruency
minimizes loss of mobility
reduces friction
decreases biomechanical stress

Question 25

The TMJ disc has two parts - what movements do they allow?

Answer 25

lower part allows depression and elevation upper part allows protrusion and retraction

Question 26

Muscles of mastication

Answer 26

masseter temporalis medial and lateral pterygoid

Question 27

Masseter

Answer 27

A: elevate mandible O: zygomatic arch and maxillary process I: lateral mandibular rami N: Masseteric N from anterior trunk of mandibular N

Question 28

Temporalis

Answer 28

A: elevate and retract the mandible O: temporal fossa I: coronoid process and mandibular rami N: deep temporal N from anterior trunk of mandibular N

Question 29

Medial Pterygoid (internus)

Answer 29

A: elevate and contralaterally deviate mandible, both together would close the jaw O: - deep head; lateral plate of pterygoid process of sphenoid bone and palatine bone - superficial head; tuberosity of maxilla and palatine bone I: medial mandible near angle N: Nerve to medial pterygoid from mandibular N

Question 30

Lateral Pterygoid

Answer 30

A: protrusion and contralateral deviation of mandible O: upper head; roof of infratemporal fossa, lower head; lateral surface of lateral plate of pterygoid process I: capsule of TMJ near attachment to DISC; pterygoid fovea on mandibular neck N: nerve to lateral pterygoid from anterior trunk of mandibular N or from buccal branch

Question 31

Which mastication muscle attaches directly to the disc?

Answer 31

lateral pterygoid

Question 32

Digastric muscle is ____ innervated

Answer 32

Dual N: anterior belly; trigeminal N - Mandibular N Posterior belly; facial nerve

Question 33

digastric muscle action

Answer 33

anterior belly; opens mouth by lowering mandible; raises hyoid Posterior belly - pulls hyoid upward and back

Question 34

list the three ligaments of the TMJ joint

Answer 34

temporomandibular stylomandibular ligament sphenomandibular

Question 35

What artery primarily feeds muscles of the face

Answer 35

external carotid artery

Question 36

What is a nerve that does lots of sensory innervation to the face

Answer 36

trigeminal nerve

Question 37

Bruxism

Answer 37

teeth drinding

Question 38

plagiocephaly

Answer 38

asymmetrical flattening of one side of the skull

Question 39

brachycephaly

Answer 39

flattened appearance at the back of the head

Question 40

scaphocephaly

Answer 40

long narrow head

Question 41

12 cranial nerves

Answer 41

o o o to touch and feel very good velvet ahhh olfactory optic oculomotor trochlear trigeminal abducens facial vestibulocochlear glossopharyngeal vagus accessory hypoglassal