Lectures 27-28

Question 1

Masseter origin/insertion

Answer 1

O: zygomatic arch
I: lateral surface of ramus, angle, and body of mandible

Question 2

strongest muscle in the body

Answer 2

masseter

Question 3

innervation of mastication (chewing muscles)

Answer 3

motor portion of mandibular division (V3) of trigeminal nerve (CN 5)

Question 4

temporalis origin/insertion

Answer 4

O: temporalis fossa of temporal bone
I: coronoid process of mandible

Question 5

medial pterygoid origin/insertion

Answer 5

O: between medial and lateral pterygoid plates
I: medial surface of ramus, angle, and body of mandible

Question 6

lateral pterygoid origin/insertion

Answer 6

O: lateral pterygoid plate
I: anterior neck of mandibular condyle

Question 7

2 things that always occur when the jaw is opened

Answer 7

1. condyle is placed anteriorly (jaw partially dislocates)

2. mandible is depressed

Question 8

elevation of the mandible is mostly accomplished by the

Answer 8

masseter and medial pterygoid

Question 9

the masseter and medial pterygoid form the ___, which suspends the mandible

Answer 9

mandibular sling

Question 10

the lateral pterygoid causes the mandible to

Answer 10

protrude

Question 11

suprahyoid group

Answer 11

mylohyoid, anterior belly of digastric, geniohyoid

Question 12

ligaments of the TMJ

Answer 12

articular capsule, articular disk, temporomandibular ligament, stylomandibular ligament, sphenomandibular ligament

Question 13

supplies sensation to the lower teeth and aveolar surface of the mandible, the chin

Answer 13

mandibular division via its inferior alveolar branch

Question 14

the inferior alveolar nerve enters through the ___ and exits through the ___

Answer 14

mandibular foramen, mental foramen

Question 15

the area medial to the ramus of the mandible

Answer 15

infratemporal fossa

Question 16

the pterygoid plexus communicate with the

Answer 16

inferior ophthalmic vein

Question 17

the inferior ophthalmic vein drains into the

Answer 17

cavernous sinus

Question 18

the cavernous sinus drains into the ___ via the ___

Answer 18

sigmoid sinus, greater and lesser petrosal sinuses

Question 19

formed by clumps of bacteria from an infection on the side of the face

Answer 19

cavernous sinus thrombus

Question 20

anterior boundary of infratemporal fossa

Answer 20

maxilla

Question 21

superior boundary of infratemporal fossa

Answer 21

greater wing of sphenoid

Question 22

medial boundary of infratemporal fossa

Answer 22

lateral pterygoid plate

Question 23

lateral boundary of infratemporal fossa

Answer 23

ramus of mandible

Question 24

posterior boundary of infratemporal fossa

Answer 24

spine of sphenoid

Question 25

contents of infratemporal fossa

Answer 25

maxillary artery and its branches, pterygoid plexus of veins, inferior alveolar nerve w/br. to mylohyoid, lingual nerve, medial and lateral ptergoid muscles, chordates tympani nerve, otic ganglion, auriculotemporal nerve

Question 26

4 branches of V3

Answer 26

inferior alveolar n, lingual n, buccal n, auricultotemporal n

Question 27

parts of the nose

Answer 27

free tip, root, external nares (nostrils) and ala

Question 28

entrance of the nose

Answer 28

external nares (nostrils)

Question 29

what the external nares are separated by

Answer 29

nasal septum

Question 30

nasal septum consists of

Answer 30

anterior, cartilaginous part and posterior, bony part

Question 31

bony framework of the nose includes

Answer 31

2 nasal bones, 2 frontal portions of maxillary bones, 2 nasal portions of frontal bone

Question 32

opening to nose in cranium

Answer 32

piriform fossa

Question 33

function of nasalis muscle

Answer 33

opens the nostrils

Question 34

function of depresso septi muscle

Answer 34

stabilizes the septum

Question 35

depression between the 2 ridges created in septum

Answer 35

philtrum

Question 36

function of levator palpebrae superioris plaque muscle

Answer 36

scrunches nose

Question 37

what divides the nasal cavity into right and left chambers

Answer 37

nasal septum

Question 38

airway of the external nose

Answer 38

vestibule

Question 39

skin to mucus membrane connection

Answer 39

limen nasi

Question 40

2 other regions of nasal cavity

Answer 40

olfactory and respiratory regions

Question 41

bones of nasal septum

Answer 41

perpendicular plate of ethmoid bone, vomer, perpendicular plate of palatine bone

Question 42

floor of nasal cavity

Answer 42

palatine processes of maxillary bone and horizontal plates of palatine bone

Question 43

roof of nasal cavity

Answer 43

cribriform plate of ethmoid bone

Question 44

also known as turbinate bones; often found on lateral walls of nasal cavity

Answer 44

conchae

Question 45

passageways of nasal cavity

Answer 45

meati

Question 46

where sphenoid sinus drains

Answer 46

spheno-ethmoidal recess

Question 47

bulge lying underneath the middle conchae, caused by the middle ethmoid air cells

Answer 47

ethmoid bulla

Question 48

cleft lying underneath the middle conchae where the maxillary sinus, frontal sinus, and anterior ethmoidal air cells drain

Answer 48

hiatus semilunaris

Question 49

opening for nasolacrimal duct

Answer 49

lacrimal apparatus

Question 50

relieves tears that migrate medially across conjunctiva

Answer 50

lacrimal gland

Question 51

collects tears

Answer 51

lacrimal lake

Question 52

red tissue in lake

Answer 52

lacrimal caruncle

Question 53

on medial eye lid, small bump

Answer 53

lacrimal papillae

Question 54

from puncta to sac

Answer 54

lacrimal canaliculi

Question 55

to nasolacrimal duct

Answer 55

lacrimal sac

Question 56

drains into nasal cavity; nose runs when you cry

Answer 56

nasolacrimal duct

Question 57

supply nasal cavity for sense of smell

Answer 57

olfactory nerves

Question 58

sensation is supplied by branches of the

Answer 58

trigeminal nerve

Question 59

present for the control of secretions and blood flow

Answer 59

sympathetic/parasympathetic innervation

Question 60

primary blood flow to the nasal cavity is via the posteriorly entering ___ artery

Answer 60

sphenopalatine

Question 61

branches of sphenopalatine artery

Answer 61

anterior and posterior ethmoidal arteries, greater palatine artery, nasal br. of facial artery

Question 62

give resonance to the voice and lighten the skill

Answer 62

paranasal sinuses