Nasal Cavities

Question 1

What are the functions of the nasal cavity

Answer 1

• Moisten air
• warm air
• filter particles
• Heat exchangers for cooling the brain
• Olfaction

Question 2

What are nares

Answer 2

nostrils

Question 3

What are nasolabial glands

Answer 3

present in some animals to keep their nostrils moist

Question 4

What is alar cartilage

Answer 4

cartilage that supports the apex of the nose and helps shape the nares

Question 5

What is the nasal incisive notch

Answer 5

blind ending notch in the nose of horses

Question 6

What is the os rostrale

Answer 6

bone in the snout of the pig

Question 7

What are the 3 nostril dilation muscles

Answer 7

• Levator nasolabialis
• Caninus
• Transversus nasi

Question 8

What nerve innervates nose dilator muscles

Answer 8

facial nerve

Question 9

What is the nasal vestibule

Answer 9

nasal cavity superior to nostrils, transition from skin to mucous membrane, contains the opening of the nasolacrimal duct

Question 10

Name the bones dorsal to the nasal cavity

Answer 10

frontal and nasal bones

Question 11

Name the bones lateral to the nasal cavity

Answer 11

lacrimal, zygomatic, incisive and maxilla bones

Question 12

Name the bones ventral to the nasal cavity

Answer 12

palatine, maxilla, incisive and vomer bones

Question 13

Name the bones caudal to the nasal cavity

Answer 13

ethmoidal bones

Question 14

What is the nasal septum

Answer 14

partition separating the right and left nasal cavities

Question 15

What is the cribiform plate

Answer 15

superior surface of the ethmoid, perforated by a foramina which allows passage of the olfactory nerves (provide sense of smell)

Question 16

What is the nasal conchae

Answer 16

turbinate bones twisted and spiraled to form conchae

Question 17

Why do mammals have hard paletes

Answer 17

to allow breathing and suckling at the same time

Question 18

What is a conchal sinus

Answer 18

when a conchae fuses with neighbouring bones

Question 19

what is a bulba in a conchae

Answer 19

when the spiral closes in on itself and forms a cavity

Question 20

Name the 2 types of ethmoturbinates

Answer 20

ectoturbinates

endoturbinates

Question 21

Describe ectoturbinates

Answer 21

Are in the frontal sinus and point up

Question 22

Describe endoturbinates

Answer 22

found in nasal cavity and point rostrally and down

Question 23

Describe maxilloturbinates

Answer 23

found in nasal cavity and are attached to maxilla bones

Question 24

What are the 3 types of conchae

Answer 24

dorsal
middle
ventral

Question 25

Name the 4 types of meatus

Answer 25

Dorsal
Ventral
Common
Middle

Question 26

Where does the dorsal meatus go to

Answer 26

the olfactory mucosa

Question 27

where does the middle meatus go to

Answer 27

the paranasal sinuses

Question 28

where does the ventr meatus go to

Answer 28

the pharynx

Question 29

where does the common meatus go to

Answer 29

the pharynx

Question 30

what meatus do we put endoscopes into

Answer 30

ventral meatus

Question 31

What is the vomeronasal organ

Answer 31

is a pheromone-detecting organ of vertebrates

Question 32

decribe the respiratory mucosa

Answer 32

mucus-covered membrane that lines the tubes of the respiratory tree

Question 33

Which is the bigger, the lamina propria or the respiratory epithelium

Answer 33

the lamina propria

Question 34

what are the functions of respiratory epithelium

Answer 34

regulation of air flow, cleaning, humidification, warming

Question 35

Decribe the olfactory receptor

Answer 35

exposed dendrites on the mucosal surface detects chemicals

Question 36

how are horses adapted to have less resistance in their nasal airways

Answer 36

nostrils expand and distend, straighter head and neck

Question 37

describe laminar flow

Answer 37

a smooth pattern of flow

Question 38

describe turbulent flow

Answer 38

irregular flow with random variations in pressure