Question 1

Which structure is responsible for filtering, warming, and humidifying the air before it enters the lower respiratory tract?

Accepted Answer

Nasal cavity

Question 2

A patient suffers an injury that prevents the larynx from functioning properly. Which of the following symptoms would MOST likely occur?

Accepted Answer

Loss of voice or difficulty speaking

Question 3

If the right main (primary) bronchus is blocked, which of the following is the most immediate consequence?

Accepted Answer

Reduced airflow to the right lung

Question 4

Which structure serves as a common passageway for both air and food?

Accepted Answer

Pharynx

Question 5

During swallowing, which structure prevents food from entering the lower respiratory tract?

Accepted Answer

Epiglottis

Question 6

Which of the following best describes the function of the trachea?

Accepted Answer

Conducting air from the larynx to the bronchi

Question 7

A tumor in the right lung could directly affect which of the following processes?

Accepted Answer

Oxygen exchange in the alveoli

Question 8

Which of the following is the correct sequence of airflow during inhalation?

Accepted Answer

Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Lungs

Question 9

If the diaphragm is paralyzed, which of the following will be most affected?

Accepted Answer

Ability to inhale and exhale air

Question 10

Which structure is NOT part of the conducting zone of the respiratory system?

Accepted Answer

Right lung alveoli

Question 11

A patient with a deviated septum may experience difficulty breathing through which structure?

Accepted Answer

Nasal cavity

Question 12

Which of the following best explains why the right main (primary) bronchus is more likely to receive aspirated objects than the left?

Accepted Answer

It is wider, shorter, and more vertical than the left bronchus.

Question 13

Which structure is primarily responsible for voice production?

Accepted Answer

Larynx

Question 14

If a person inhales through the mouth instead of the nose, which function is most compromised?

Accepted Answer

Air filtration and humidification

Question 15

Which of the following equations best represents the relationship between pressure, volume, and airflow in the respiratory system?

Accepted Answer

$$P_1V_1 = P_2V_2$$

The Human Respiratory System: Structure and Function

Study Guide - Practice Questions