Nasal and Oral Cavities

Question 1

Four functions of nasal cavity?

Answer 1

1) Warming/Humidification
2) Olfaction
3) Removes and traps pathogens
4) Drains and clears para-nasal sinuses

Question 2

Nasal Conchae function?

Answer 2

Increase nose SA and disrupt fast flow of air, so more time to be humidified

Question 3

What structure opens into the inferior meatus?

Answer 3

Nasolacrimal duct

Question 4

What structure opens into middle meatus?

Answer 4

Frontal, maxillary, anterior ethmoid sinuses open at hiatus semilunaris. Middle ethmoid sinus opens onto ethmoidal bulla.

Question 5

What structure opens into the superior meatus?

Answer 5

Posterior ethmoid sinus

Question 6

Where does the sphenoid sinuses open into nasal cavity?

Answer 6

Spheno-ethmoidal recess

Question 7

What is advantage of rich vascular supply to the nose?

Answer 7

Can change humidity and temperature of inspired air

Question 8

What nerve supplies general nasal sensation

Answer 8

Branches of trigeminal nerves