Nose

Question 0

What are the two parts of the nasal cavity?

Answer 0

Olfactory area (superior one third) and a respiratory area (inferior two thirds)

Question 1

What are the two part of the nose?

Answer 1

External nose and nasal cavities (divided into right and left by nasal septum)

Question 2

What are the functions of the nose?

Answer 2

Olfaction, respiration, filtration of dust, humidification of inspired air, and reception and elimination of secretions from the nasal mucosa, paranasal sinuses, and nasolacrimal ducts

Question 3

What are the two parts of the external nose?

Answer 3

Bony and cartilaginous parts

Question 4

What are the bony parts of the external nose?

Answer 4

Nasal bones, frontal processes of the maxillae, nasal part of the frontal bone and its nasal spine, and bony part of the nasal septum

Question 5

What comprises the cartilaginous part of the external nose?

Answer 5

Five main cartilages: two lateral, two alar, and one septal cartilage

Question 6

What do the nasal cavities communicate with?

Answer 6

1. Posteriorly - nasopharynx
2. Superiorly and laterally - paranasal sinuses
3. Superiorly - lacrimal sacs and conjuctiva

Question 7

What are the three parts of the roof of the nasal cavity?

Answer 7

Frontonasal, ethmoidal, and sphenoidal parts

Question 8

What are the components of the nasal septum (medial wall of the nasal cavity)?

Answer 8

Perpendicular plate of the ethmoid, vomer, septal cartilage, and nasal crest of the maxillary and palantine bones

Question 9

What are the four passages of the nasal conchae?

Answer 9

Sphenoethmoidal recess, superior nasal meatus, middle nasal meatus, and inferior nasal meatus

Question 10

What is the semilunar hiatus?

Answer 10

Semicircular groove which the frontonasal duct opens

Question 11

What is the Kiesselbach area?

Answer 11

Anastomosis of the five arteries supplying the nasal septum: sphenopalantine artery, anterior and posterior ethmoidal arteries, greater palantine artery, superior labial artery, and lateral nasal branches of the facial artery

Question 12

What are the four paranasal sinuses?

Answer 12

Frontal sinus, ethmoidal sinus, sphenoidal sinus, and maxillary sinus

Question 13

Where does the frontal sinus drain through?

Answer 13

Frontonasal duct into the ethmoidal infundibulum, which opens into the semilunar hiatus of the middle meatus

Question 14

Where do the ethmoidal sinuses drain into?

Answer 14

Anterior cells - middle meatus through the infundibulum
Middle cells - middle meatus
Posterior cells - superior meatus

Question 15

What does the nasal conchae do?

Answer 15

Divides the nasal cavity into four passages

Question 16

Where do the maxillary sinuses drain?

Answer 16

Middle meatus of the nasal cavity by way of the semilunar hiatus via the maxillary ostium

Question 17

What does the sphenoid sinus drain into?

Answer 17

Sphenoethmoidal recess