Prelim | Respiratory System | Nasal Cavity

Question 1

Location of the nasal cavity
- Anterior of the (1)
- Inferior to (2)
- Superior to (3)
- Posteriorly, it communicates with (4) through two openings (internal nares or [5])

Answer 1

1. skull
2. nasal bones
3. oral cavity
4. pharynx
5. choanae

Question 2

Lateral walls of the nasal cavity

Answer 2

1. Ethmoid
2. Maxillae
3. Lacrimal
4. Palatine
5. Inferior nasal conchae bones

Question 3

Roof of the nasal cavity

Answer 3

Ethmoid bone

Question 4

Floor of the nasal cavity

Answer 4

Hard palate

Question 5

Anterior of the nasal cavity

Answer 5

Nasal vestibule

Question 6

Superior of the nasal cavity

Answer 6

Sphenoid bone

Question 7

Vertical partition dividing the nasal cavity

Answer 7

Nasal septum

Question 8

What is the nasal septum made of?

Answer 8

Anterior: Hyaline cartilage
Rmainder:
- Vomer
- Perpendicular plate pf ethmoid
- Maxillae
- Palatine bones

Question 9

Paranasal sinuses vs nasolacrimal ducts

Answer 9

Paranasal sinuses: drain mucus
Nasolacrimal ducts: drain tears

Question 10

Ducts from the (1) (which drain mucus) and the (2) (which drains tears) also open into the nasal cavity

Answer 10

1. paranasal sinuses
2. nasolacrimal ducts

Question 11

Besides producing mucus, the — serve as resonating chambers for sound as we speak or sing.

Answer 11

paranasal sinuses

Question 12

Regions of the nasal cavity

Answer 12

1. Respiratory Region
2. Olfactory region

Question 13

Differentiate respiratory vs olfactory regions

Answer 13

1. Respiratory Region
   - Larger, inferior
   - For the air to pass through
2. Olfactory region
   - Smaller, superior
   - For sense of smell

Question 14

Other term for conchae

Answer 14

Turbinates

Question 15

Partitions of the turbinates

Answer 15

1. Superior concha (2)
2. Middle concha (2)
3. Inferior concha (2)

Left and right (6 all in all)

Question 16

Partitions of the meatus

Answer 16

1. Superior meatus
2. Middle meatus
3. Inferior meatus
4. Sphenoethmoidal recess

Question 17

Physiology of nose/ nasal cavity

Answer 17

1. Vestibule
2. Conchae
3. Conchae and Meatus
4. Goblet cell and nasolacrimal ducts
5. Cilia

Question 18

Filters out large dust particles

Answer 18

Vestibule

Question 19

Increases surface area in the internal nose and prevents dehydration by trapping water droplets during exhalation.

Answer 19

Conchae

Question 20

They are warmed by the blood in the capillaries

Answer 20

Conchae and meatus

Question 21

Secretes mucus that moistens air and traps dust particles with the help of drainage from the NLD

Answer 21

Goblet cell and nasolacrimal ducts

Question 22

Moves the mucus and traps dust particles towards the pharynx (swallowed or spit out)

Answer 22

Cilia