TOPIC 15C. Nasal cavity, blood supply and innervation

Question 1

whats the nasal cavity

Answer 1

first part of resp tract

Question 2

where does nasal cavity extend to/from

Answer 2

from nostrils to cribiform plate of ethmoid bone to left and right by nasal septum

Question 3

what bones border the nasal cavity dorsally

Answer 3

nasal and frontal

Question 4

what bones border the nasal cavity laterally

Answer 4

maxilla, lacrimal, incisivum and zygomaticus

Question 5

what bones border the nasal cavity ventrally

Answer 5

palatine, incisive and maxilla

Question 6

what do nasal conchae do

Answer 6

project into nasal cavity, increase the surface area, more= better smell in ca

Question 7

what does endoturbinate 1 form

Answer 7

bony base of dorsal nasal concha

Question 8

what does endoturbinate 2 form

Answer 8

bony base of concha nasalis media

Question 9

pattern in size of endoturbinates

Answer 9

normally decrease in size except in ca - stay large esp 2-4

Question 10

what forms concha nasalis ventralis

Answer 10

os maxilla

Question 11

how are meatuses formed

Answer 11

nasal concha divide nasal cavity into meatuses

Question 12

how many nasal meatuses in domestic animals

Answer 12

3, all communicate with meatus nasi communis

Question 13

whats meatus nasi dorsalis involved in

Answer 13

olfaction

Question 14

whats meatus nasi media involved in

Answer 14

paranasal sinuses

Question 15

whats meatus nasi ventralis involved in

Answer 15

respiration

Question 16

blood supply to nasalcavity

Answer 16

a max - a palatinus desc - a sphenopalatinus - a nasalis lateralis, caudalis and septalis

Question 17

innervation of nasal cavity

Answer 17

n olfactorius

n vomeronasalis

Question 18

whats organum vomeronasale for

Answer 18

urinary pheromones