Starred Lecture Items L20

Question 1

how many bones of the cranium

Answer 1

22 bones

Question 2

parts that make up the face

Answer 2

calvaria, floor of cranial cavity, viscerocranium

Question 3

anterior face bones

Answer 3

frontal bone
zygomatic and nasal bones
maxilla
mandible

Question 4

what is the pterion

Answer 4

thin bone on lateral face
“sleepy time button”

Question 5

temporal bone parts

Answer 5

squamous, zygomatic process, tympanic, styloid process, petromastoid

Question 6

orbital group muscles of the face

Answer 6

orbicularis oculi
corrugator supercilii
occipitofrontali

Question 7

nasal group muscles of the face

Answer 7

nasalis
procerus
depressor septi

Question 8

oral group muscles of the face

Answer 8

depressor anguli oris
depressor labii inferioris
mentalis
risorius
orbicularis oris
buccinator

Question 9

what nerve enervates all muscles of the face

Answer 9

facial nerve (CN VII)

Question 10

palpebral part of the obicularis oculi does what action

Answer 10

gently shuts eye

Question 11

orbital part of the obicularis oculi does what action

Answer 11

forcefully shuts the eye (winking)

Question 12

action of the occipitofrontalis (frontal belly)

Answer 12

wrinkles forehead, lifts eyebrows

Question 13

transverse part of the nasalis action

Answer 13

comprises the nasal aperature

Question 14

alar part of the nasalis action

Answer 14

flares the nostril

Question 15

procerus action

Answer 15

draws downt the medial angle of the eyebrow

Question 16

depressor septi action

Answer 16

pulls nose inferiorly

Question 17

depressor anguli oris action

Answer 17

frown

Question 18

depressor labii inferioris

Answer 18

draws lower lip downward and laterally (partial cringe)

Question 19

mentalis action

Answer 19

raises and protrudes lower lip

Question 20

corrugator supercilii action

Answer 20

draws eyebrows medially and downward

Question 21

risorius action

Answer 21

retracts corners of mouth (half-effort grin)

Question 22

zygomaticus major action

Answer 22

smile (corners of mouth up and away)

Question 23

zygomaticus minor action

Answer 23

draws upper lip upward (showing teeth)

Question 24

orbicularis oris action

Answer 24

closes lips; protrudes lips

Question 25

buccinator action

Answer 25

presses cheek against teeth; compresses distended cheeks (think: play the bugle)

Question 26

platysma action

Answer 26

tenses the skin of the neck and can bring down corners of the mouth

Question 27

bell's palsy vs stroke (CVA)

Answer 27

both are acute onset bell's palsy: whole side of the face (usually one side) stroke: usually lower side of face

Question 28

definition and characteristics of the mandibular fossa on temporalis bone

Answer 28

where the mandibular condyle comes in contact with the glenoid fossa of the temporal bone flat surface and made of fibrocartilage

Question 29

what is found between the the mandibular fossa and the mandibular head

Answer 29

articular disk

Question 30

two parts of the disc of the TMJ joint and function

Answer 30

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

Question 31

what is mastication and what are the muscles involved

Answer 31

chewing; masseter, temporalis, and medial and lateral pterygoid

Question 32

masseter action

Answer 32

elevates mandible

Question 33

temporalis action

Answer 33

elevate and retract the mandible

Question 34

whats the strongest muscle in the body

Answer 34

masseter

Question 35

trigeminal nerve (CN5) breaks into what three nerves

Answer 35

opthalmic maxillary mandibular

Question 36

medial pterygoid two heads and muscle action

Answer 36

deep and superficial head elevate and contralaterally deviate mandible

Question 37

origins and insertions of muscles of mastication

Question 38

lateral pterygoid two heads and muscle action

Answer 38

upper head and lower head protrusion and contralaterally deviate mandible

Question 39

what muscles form the sling in the jaw

Answer 39

masseter is on outside of jaw medial pterygoid is on inside of jaw temporalis is between

Question 40

digastric muscle heads and actions

Answer 40

anterior belly: opens mouth by lowering mandible; raises hyoid posterior belly: pulls hyoid upward and back

Question 41

nerve enervation of digastric muscle

Answer 41

anterior belly: trigeminal nerve/mandibular n posterior belly: facial nerve (VII)

Question 42

ligaments of the tmj joint and what movement do they resist

Answer 42

temporomandibular ligament: limits lateral displacement stylomandibular and sphenomandibular: limits protraction/ mandible coming forward

Question 43

muscles involved in elevation of tmj (closing)

Answer 43

masseter temporalis and medial pterugoid

Question 44

muscles involved in depression of tmj (opening)

Answer 44

lateral pterygoid (inferior belly)

Question 45

muscles involved in protrusion of tmj

Answer 45

masseter medial pterygoid lateral pterygoid

Question 46

muscles involved in retrusion of tmj

Answer 46

temporalis

Question 47

muscles involved in lateral excursion/deviation of tmj

Answer 47

ipsi: temporalis contra: medial/lateral pterygoid

Question 48

what facial arteries have the external carotid artery as their parent structure

Answer 48

transverse facial artery superficial temporal artery maxillary artery lingual artery facial artery

Question 49

what facial arteries have the maxillary artery as their parent structure

Answer 49

infra-orbital artery buccal artery mental artery

Question 50

dermatomes of the head and neck

Question 51

three signs of TMD (temporomandibular disfunction)

Answer 51

orofacial pain restricted jaw function joint noise (popping, locking, snapping)

Question 52

bruxism

Answer 52

grinding of the teeth

Question 53

plagiocephaly

Answer 53

flat side of skull

Question 54

cranial nerve pneumonic

Answer 54

oh oh oh to touch and feel very good velvet ah olfactory optic oculomotor trochleau trigeminal abducens facial vestibulocochlar glossopharyngeal vagus accessory hypoglossal