Nasal Cavities and Paranasal Sinuses

Question 1

nasal cavities open on face through what

Answer 1

nostrils/ nares

Question 2

nasal cavities open posteriorly to nasopharynx through

Answer 2

choanae

Question 3

what is a vestibule

Answer 3

dilation inside aperture of each nostril

Question 4

nasal cavity is lined by

Answer 4

skin with hairs
sebaceous glands
sweat glands

Question 5

whats a meatus

Answer 5

a passageway

Question 6

whats a conchae

Answer 6

a structure shaped like a shell

(can be part of the ethmoid bone/ a separate bone)

Question 7

what bones forms the roof of the nasal cavity

Answer 7

nasal
frontal
ethmoid (cribriform plate)
sphenoid (body)

Question 8

what does the cribriform plate transmit

Answer 8

olfactory nerves

Question 9

what forms the floor of the nasal cavity

Answer 9

palatine processes of maxillary bones and horizontal plate of palatine bone

Question 10

what does the floor of the nasal cavity contain

Answer 10

incisive foramen

Question 11

what does the incisive foramen transmit

Answer 11

nasopalatine nerve

sphenopalatine artery

Question 12

what forms the medial wall (nasal septum) of the nasal cavity

Answer 12

septal cartilage

perpendicular plate of ethmoid bone

vomer

process of palatine, maxillary, frontal, sphenoid and nasal bones

Question 13

what forms the lateral wall of the nasal cavity

Answer 13

nasal bone

frontal process and nasal surface of maxilla

lacrimal bone

perpendicular plate of palatine bone

medial pterygoid plate of sphenoid bone

superior and inferior concha of ethmoid bone

Question 14

what structures are contained on the lateral wall of the nasal cavity

Answer 14

sphenoethmoidal recess

superior meatus

middle meatus

inferior meatus

sphenopalatine foramen

Question 15

what opening is at the sphenoethmoidal recess

Answer 15

opening of sphenoid sinus

Question 16

what opening is at the superior meatus

Answer 16

opening of posterior ethmoidal air cells

Question 17

what opening is at the middle meatus

Answer 17

opening of frontal sinuses into infundibulum

opening of middle ethmoidal sinuses into ethmoidal bulla

openings of anterior ethmoidal air cells and maxillary sinus in the hiatus semilunaris

Question 18

what opening is at the inferior meatus

Answer 18

opening of nasolacrimal duct

Question 19

what opening is at the sphenopalatine foramen

Answer 19

opening of the pterygopalatine fossa

Question 20

what does the sphenopalatine foramen transmit

Answer 20

sphenopalatine artery

nasopalatine nerve

Question 21

the vestibule is bound by what

what lines the vestibule

Answer 21

alar plate

skin and hairs

Question 22

the respiratory region consist of what part of the nasal cavity

Answer 22

lower third of nasal cavity

Question 23

what does the respiratory region do

Answer 23

warms, moistens and filters air with mucous membrane

Question 24

the olfactory region of the nasal cavity consists of what

Answer 24

superior nasal concha
upper third of nasal septum

Question 25

what innervates the olfactory region and what do the nerves do

Answer 25

olfactory nerves- which convey sense of smell to olfactory bulb through cribriform plate of ethmoid bone

Question 26

whats the blood supply to the nasal cavity

Answer 26

opthalmic artery-through anterior and posterior branches of ethmoidal arteries on lateral wall posterior lateral nasal and posterior septal branches of sphenopalatine artery of maxillary artery facial artery- through septal branch of superior labial artery and nasal branch

Question 27

lymphatic of the nasal cavity drain into

Answer 27

submandibular nodes retropharyngeal nodes deep cervical nodes then into jugular trunks

Question 28

whats the nerve supply to the nasal cavity

Answer 28

olfactory nerve ophthalmic nerve maxillary nerve via pterygopalatine ganglion infraorbital nerve

Question 29

paranasal sinuses consist of

Answer 29

ethmoidal sinus frontal maxillary sphenoidal

Question 30

where do paranasal sinuses open into

Answer 30

meatuses of lateral nasal wall sphenoethmoid recess

Question 31

what do ethmoidal sinuses have

Answer 31

ethmoidal air cells

Question 32

where are ethmoidal air cells

Answer 32

within ethmoidal labyrinth between orbit and nasal cavity

Question 33

ethmoidal sinuses can be subdivided into what and do they drain into

Answer 33

posterior ethmoidal air cells- which drains into superior nasal meatus middle ethmoidal air cells- which drain into summit of ethmoidal bulla of middle nasal meatus anterior ethmoidal air cells- which drain into a curved fissure hiatus semilunaris of middle nasal meatus

Question 34

where do the frontal sinuses lie

Answer 34

frontal bone

Question 35

where do the frontal sinuses open into

Answer 35

hiatus semilunaris of middle nasal meatus through frontal nasal duct (infundibulum)

Question 36

frontal sinuses are innervated by

Answer 36

supraorbital branch of the ophthalmic nerve

Question 37

what are the largest sinuses

Answer 37

maxillary

Question 38

where do the maxillary sinuses lie

Answer 38

in maxillary bone lateral to nasal cavity and inferior to floor of orbit

Question 39

maxillary sinuses open into

Answer 39

posterior aspect of hiatus semilunaris of middle nasal meatus

Question 40

where do sphenoidal sinus lie

Answer 40

sphenoid bone

Question 41

where does the sphenoidal sinus open

Answer 41

into sphenoethmoidal recess of nasal cavity

Question 42

what innervates the sphenoidal sinus

Answer 42

maxillary nerve

Question 43

what lies above the sphenoidal sinus

Answer 43

pituitary gland

Question 44

sphenoidal sinus can be surgically reached through what

Answer 44

trans-sphenoidal approach

Question 45

whats a sneeze and this reflex is caused by what

Answer 45

its involuntary expulsion of air through mouth and nose branches of maxillary nerve

Question 46

whats an epistaxis

Answer 46

nose bleed from rupture of blood nasal vessels like the sphenopalatine artery

Question 47

whats maxillary sinusitis

Answer 47

its where an infection spreads from the sinus to the upper teeth causing toothache

Question 48

what can nasal polyps from sinuses do when they are inflamed

Answer 48

project into nasal cavity and fill nasopharynx

Question 49

whats rhinoplasty

Answer 49

type of plastic surgery that changes shape and size of nose