Question 1

Which of the following best describes the primary function of the respiratory system?

Accepted Answer

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

Question 2

Which structure is NOT part of the upper respiratory system?

Accepted Answer

Larynx

Question 3

As air descends the respiratory tract, how does the composition of respiratory mucus change?

Accepted Answer

It becomes thinner and less ciliated

Question 4

Which defense mechanism is most prominent within the respiratory mucosa?

Accepted Answer

Ciliary movement and mucus trapping

Question 5

Which of the following best differentiates the vocal folds from the vestibular folds?

Accepted Answer

Vocal folds are involved in sound production, while vestibular folds protect the airway

Question 6

Which statement correctly describes the anatomy of the trachea?

Accepted Answer

It contains C-shaped rings of cartilage to maintain patency

Question 7

Which of the following is TRUE regarding the right and left lungs?

Accepted Answer

The right lung is larger and has three lobes, while the left lung has two lobes and a cardiac notch

Question 8

Air passes through the bronchial tree in which order?

Accepted Answer

Primary bronchi → Secondary bronchi → Tertiary bronchi → Bronchioles → Terminal bronchioles → Respiratory bronchioles → Alveoli

Question 9

Which disease is characterized by chronic inflammation and narrowing of the bronchioles, often triggered by allergens?

Accepted Answer

Asthma

Question 10

The alveolar wall is primarily composed of which two cell types?

Accepted Answer

Type I pneumocytes and Type II pneumocytes

Question 11

Which enzyme produced by the lungs is crucial for the conversion of carbon dioxide and water into carbonic acid?

Accepted Answer

Carbonic anhydrase

Question 12

Which equation represents Boyle's Law as it relates to pulmonary ventilation?

Accepted Answer

$$P 	imes V = k$$

Question 13

Which factor does NOT directly impact lung compliance?

Accepted Answer

Number of red blood cells

Question 14

During inspiration, which muscle is primarily responsible for increasing thoracic volume?

Accepted Answer

Diaphragm

Question 15

If a patient has a tidal volume ($$TV) of 500 mL $$and a respiratory rate ($$RR) of 12 $$breaths per minute, what is their respiratory minute volume ($$RMV$$)?

$$RMV = TV 	imes RR$$

Accepted Answer

$$6000\ 	ext{mL/min}$$

Question 16

Which gas law explains why oxygen diffuses from alveoli into blood due to partial pressure differences?

Accepted Answer

Dalton's Law

Question 17

How does a decrease in blood pH affect hemoglobin's affinity for oxygen?

Accepted Answer

It decreases affinity

Question 18

Why does fetal hemoglobin have a stronger affinity for oxygen compared to adult hemoglobin?

Accepted Answer

Fetal hemoglobin binds oxygen more tightly to facilitate transfer from maternal blood

Question 19

Which of the following is NOT a way carbon dioxide is transported in the blood?

Accepted Answer

Directly attached to platelets

Question 20

Which respiratory center is located in the medulla oblongata and is responsible for setting the basic rhythm of breathing?

Accepted Answer

Dorsal respiratory group (DRG)

Comprehensive Study Guidance for Respiratory System (ANP)

Study Guide - Practice Questions

Study Guide - Flashcards