Question 1

Which of the following structures is responsible for filtering, humidifying, and warming incoming air in the conducting zone of the respiratory system?

Accepted Answer

Nasal cavity

Question 2

A patient presents with difficulty in sound production but normal breathing. Which structure is most likely affected?

Accepted Answer

Vocal folds

Question 3

During a forceful expiration, which muscles are primarily involved?

Accepted Answer

Internal and external oblique muscles

Question 4

Which type of epithelium lines the superior portion of the larynx?

Accepted Answer

Stratified squamous epithelium

Question 5

The mucociliary escalator is a defense mechanism in the respiratory tract. What is its primary function?

Accepted Answer

To trap and move particles and mucus toward the pharynx

Question 6

Which of the following best describes the function of the nasal conchae?

Accepted Answer

They increase the surface area to enhance air filtration and humidification

Question 7

A blockage in the pharyngotympanic tube would most directly affect which function?

Accepted Answer

Pressure equalization between the nasopharynx and middle ear

Question 8

Which formula correctly represents the relationship between pressure and volume during pulmonary ventilation (Boyle's Law)?

Accepted Answer

$$P_1V_1 = P_2V_2$$

Question 9

Which structure marks the point where the trachea divides into the primary bronchi?

Accepted Answer

Carina

Question 10

A patient with damage to the alveolar pores would most likely experience which of the following?

Accepted Answer

Impaired air pressure equalization between adjacent alveoli

Question 11

Which of the following is TRUE regarding the pulmonary arteries?

Accepted Answer

They deliver oxygen-poor blood to the lungs

Question 12

Which of the following structures is NOT part of the conducting zone?

Accepted Answer

Alveolar sacs

Question 13

During inspiration, which of the following occurs?

Accepted Answer

Intrapulmonary pressure decreases

Question 14

Which of the following is the correct order of airflow from the nasal cavity to the lungs?

Accepted Answer

Nasal cavity → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Alveoli

Question 15

Which of the following statements about alveolar macrophages is correct?

Accepted Answer

They remove inhaled particles and pathogens from the alveoli

Question 16

Which of the following is a function of the larynx?

Accepted Answer

Routing air and food into the proper channels

Question 17

Which cartilage forms the laryngeal prominence (Adam's apple)?

Accepted Answer

Thyroid cartilage

Question 18

Which of the following best explains why the right lung has three lobes while the left lung has only two?

Accepted Answer

The left lung is smaller due to the position of the heart

Question 19

Which of the following changes occurs in the bronchial tree as it transitions from bronchi to bronchioles?

Accepted Answer

Epithelium changes from pseudostratified ciliated columnar to simple cuboidal

Question 20

Which of the following is the correct description of the pleural cavity?

Accepted Answer

It is the potential space between the visceral and parietal pleura

Chapter 22: The Respiratory System – Structure and Function

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