Nose and nasal cavity

Question 1

What are the components of the upper respiratory tract?

Answer 1

-Nose
-Nasal cavity
-Pharynx
-Larynx

Question 2

State the traits of the external nose.

Answer 2

-It extends nasal cavities onto the face.
-Its positions nares downward (inferiorly)

Question 3

What are the components of the skeletal framework of the external nose.

Question 4

How many nasal cavities are there?

Answer 4

There are two nasal cavities, the left and right.

Question 5

What separates the left and right nasal cavities?

Answer 5

They are separated by the nasal septum (midline structure)

Question 6

Which components of the skeletal framework (of nose) hold the two cavities open?

Answer 6

Bone and cartilage are the skeletal framework components that hold the right and left cavities open.

Question 7

Where are small anterior regions located?

Answer 7

They are situated anteriorly and enclosed by the external nose.

Question 8

Where are large posterior regions located?

Answer 8

They are situated posteriorly and centrally within the skull.

Question 9

How is the nasal cavity separated from other structures?

Answer 9

-It is separated from the oral cavity by a hard palate.
-It is separated from the cranial cavity by frontal, ethmoid and sphenoid bones.

Question 10

State the components of choanae

Answer 10

-It is a posterior aperture (opening)
-It is opens into the nasopharynx.
-There are rigid opening completely surrounded by bone

Question 11

State the components of nares.

Answer 11

-They are anterior apertures
-They are situated on the inferior aspect of the external nose.
-They open into the floor of the nasal cavity
-Flexible opening made of cartilage and soft tissues

Question 12

What are the three regions of the nasal cavity?

Answer 12

-Nasal vestibule
-Respiratory region
-Olfactory region

Question 13

State the components of Nasal vestibule.

Answer 13

-Small dilated spaces
-Just internal to nares
-It is lined skin
-It contains hair follicles

Question 14

State the components of the Respiratory region

Answer 14

-It is the largest part of the nasal cavity.
-It has a rich neurovascular supply
-Its is lined by respiratory epithelium

Question 15

State the components of the olfactory region

Answer 15

-It is small and situated at the apex of the nasal cavity
-It is lined by olfactory epithelium
-It contains olfactory receptors

Question 16

State the components of the roof (of nasal cavity)

Answer 16

-it is narrow
-It is highest in central regions (of nasal cavity)
-Centrally (at its highest), it is formed by the cribriform plate of ethmoid bone.

Question 17

State the components of the roof that is anterior to plate.