$$V_{mucus} \approx 1\,L/\text{day}$$

Question 1

Which of the following structures is NOT part of the upper respiratory tract?

Accepted Answer

Alveoli

Question 2

The nasal vestibule is primarily responsible for which of the following functions?

Accepted Answer

Filtering large particles from inspired air

Question 3

Which type of epithelium lines most of the nasal cavity and paranasal sinuses?

Accepted Answer

Pseudostratified ciliated columnar epithelium with goblet cells

Question 4

During inhalation, the nasal conchae and meatuses primarily function to:

Accepted Answer

Filter, heat, and moisten incoming air

Question 5

Which of the following bones does NOT contribute to the roof of the nasal cavity?

Accepted Answer

Maxillary bone

Question 6

A patient presents with nosebleeds originating from the anterior nasal septum. Which anatomical area is most likely involved?

Accepted Answer

Kiesselbach area

Question 7

Which of the following is a function of the paranasal sinuses?

Accepted Answer

Lighten the skull and improve voice resonance

Question 8

Which structure is continuous with the nasal cavity and serves only as an air passageway?

Accepted Answer

Nasopharynx

Question 9

The lamina propria of the respiratory mucosa contains which of the following?

Accepted Answer

Loose connective tissue with mucous and serous cells

Question 10

Which of the following best describes the function of cilia in the respiratory epithelium?

Accepted Answer

Move contaminated mucus posteriorly to the pharynx

Question 11

A patient with pansinusitis would have inflammation in which of the following?

Accepted Answer

Multiple paranasal sinuses

Question 12

Which of the following is TRUE regarding the oropharynx?

Accepted Answer

It contains the palatine and lingual tonsils

Question 13

Which formula best represents the volume of mucus produced by the nasal mucosa per day?

Accepted Answer

$$V_{mucus} \approx 1\,L/	ext{day}$$

Question 14

Which of the following is a distinguishing feature of the laryngopharynx compared to the nasopharynx?

Accepted Answer

It is a passageway for both food and air

Question 15

Which of the following statements about the nasal conchae is CORRECT?

Accepted Answer

They increase the surface area for warming and humidifying air

Question 16

Which anatomical structure is responsible for closing off the nasopharynx during swallowing?

Accepted Answer

Uvula

Question 17

A blockage in the opening of the pharyngotympanic tube would most likely affect which function?

Accepted Answer

Protection from infection in the nasopharynx

Question 18

Which of the following is the correct order of airflow through the respiratory tract before reaching the lungs?

Accepted Answer

Nasal cavity → Pharynx → Larynx → Trachea

Question 19

Which of the following best explains why the skin of the nose is thin at the root but thicker over the cartilages?

Accepted Answer

To provide protection and flexibility over the cartilages

Question 20

Which of the following is a real-world consequence of inflammation in the paranasal sinuses?

Accepted Answer

Impaired resonance of the voice and increased facial pressure

Respiratory System I

Study Guide - Practice Questions