Question 1

Which of the following best describes the primary function of the alveoli in the lungs?

Accepted Answer

To facilitate the exchange of oxygen and carbon dioxide between air and blood

Question 2

A patient is diagnosed with infant respiratory distress syndrome (IRDS). Which of the following best explains the underlying cause of this condition?

Accepted Answer

Lack of surfactant production in the alveoli

Question 3

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

Accepted Answer

Trachea

Question 4

During inspiration, which muscles contract to increase the volume of the thoracic cavity?

Accepted Answer

Diaphragm and external intercostals

Question 5

A patient presents with a deviated septum. Which of the following best describes this condition?

Accepted Answer

The septum is abnormally far from the midsagittal plane

Question 6

Which of the following is the most common way carbon dioxide is transported in the blood?

Accepted Answer

As bicarbonate ions

Question 7

A patient with a collapsed lung due to air in the pleural space is suffering from which condition?

Accepted Answer

Pneumothorax

Question 8

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

Accepted Answer

It is shorter and more vertical

Question 9

Which of the following equations correctly represents the relationship between pressure and volume during pulmonary ventilation?

Accepted Answer

$$P_1$$ $$V_1$$ = $$P_2$$ $$V_2$$

Question 10

A patient is unable to speak after a total laryngectomy. Which alternative method might be used to restore speech?

Accepted Answer

Esophageal speech

Question 11

Which of the following best describes the function of the respiratory mucosa?

Accepted Answer

It lines the air distribution tubes and traps inspired irritants

Question 12

Which breathing pattern is characterized by cycles of alternating apnea and hyperventilation, often seen in critical conditions?

Accepted Answer

Cheyne-Stokes respiration

Question 13

A patient with chronic bronchitis and emphysema is most likely to be diagnosed with which condition?

Accepted Answer

Chronic obstructive pulmonary disease (COPD)

Question 14

Which of the following is a life-threatening upper respiratory tract disorder caused by Haemophilus influenzae type B?

Accepted Answer

Epiglottitis

Question 15

Which of the following volumes represents the largest amount of air that can be exhaled after a maximal inspiration?

Accepted Answer

Vital capacity (VC)

Question 16

Which of the following best describes the role of pulmonary stretch receptors?

Accepted Answer

They respond to the stretch in lungs, protecting respiratory organs from overinflation

Question 17

A patient with pneumonia has exudate filling the alveoli and ducts of a single lobe of the lung. This is best described as:

Accepted Answer

Lobar pneumonia

Question 18

Which of the following is the correct formula for calculating vital capacity (VC)?

Accepted Answer

$$VC = TV + IRV + ERV$$

Question 19

Which of the following best explains why air moves into the lungs during inspiration?

Accepted Answer

Thoracic volume increases, lowering lung pressure below atmospheric pressure

Question 20

Which of the following is NOT a function of the nose?

Accepted Answer

Producing surfactant for the alveoli

The Respiratory System: Structure, Function, and Clinical Considerations

Study Guide - Practice Questions