Question 1

Which of the following is NOT a primary function of the respiratory system?

Accepted Answer

Producing digestive enzymes

Question 2

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

Accepted Answer

Nasal cavity

Question 3

What is the main function of the cilia found on the respiratory epithelium?

Accepted Answer

To sweep mucus and trapped debris toward the pharynx

Question 4

Which of the following best describes the role of the glottis?

Accepted Answer

It is the opening into the trachea and plays a role in sound production

Question 5

A patient is experiencing severe bronchoconstriction due to an asthma attack. Which of the following is most likely occurring?

Accepted Answer

Parasympathetic activation and histamine release are reducing airway diameter

Question 6

Which of the following is a component of the upper respiratory system?

Accepted Answer

Nasal cavity

Question 7

What is the function of alveolar macrophages?

Accepted Answer

To engulf small particles and pathogens that reach the alveoli

Question 8

Which of the following statements about the lungs is TRUE?

Accepted Answer

The right lung has three lobes separated by horizontal and oblique fissures

Question 9

A patient inhales a small particle that passes through the nasal cavity and pharynx. Which defense mechanism is most likely to remove it before it reaches the alveoli?

Accepted Answer

Cilia and mucus in the respiratory epithelium

Question 10

Which equation best represents the process of aerobic metabolism in cells?

Accepted Answer

$$\mathrm{C_6H_{12}O_6$ + 6O_2 \rightarrow 6CO_2 + 6H_2O + energy}$$

Question 11

Which of the following best describes the lamina propria in the upper respiratory system?

Accepted Answer

It contains mucous glands that discharge secretions onto the epithelial surface

Question 12

During sympathetic activation, what happens to the bronchioles?

Accepted Answer

They dilate, reducing resistance to airflow

Question 13

Which of the following is TRUE regarding the bronchopulmonary segments?

Accepted Answer

The right lung has more bronchopulmonary segments than the left lung

Question 14

A patient with a blocked nasal cavity would have difficulty with which of the following functions?

Accepted Answer

Warming and humidifying incoming air

Question 15

Which of the following best describes the path of air from the external environment to the alveoli?

Accepted Answer

Nose → Pharynx → Larynx → Trachea → Bronchi → Bronchioles → Alveoli

Question 16

Which of the following is a function of the respiratory mucosa?

Accepted Answer

To filter, warm, and humidify incoming air

Question 17

Which structure prevents food and liquids from entering the lower respiratory tract during swallowing?

Accepted Answer

Epiglottis

Question 18

Which of the following best explains why the left lung is indented on its medial margin?

Accepted Answer

To accommodate the heart, forming the cardiac notch

Question 19

Which of the following is TRUE regarding the role of the pharynx?

Accepted Answer

It is a chamber shared by the digestive and respiratory systems

Question 20

Which of the following best describes the function of the tracheal cartilage?

Accepted Answer

It supports and keeps the trachea open

Lecture 9.1:The Respiratory System

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