Question 1

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

Accepted Answer

Regulation of blood glucose levels

Question 2

Which structure is the first to filter, warm, and humidify incoming air in the respiratory tract?

Accepted Answer

Nasal cavity

Question 3

What is the main function of the alveoli in the respiratory system?

Accepted Answer

Gas exchange between air and blood

Question 4

Which of the following best describes the conducting zone of the respiratory system?

Accepted Answer

Transports air from the nose to the terminal bronchioles

Question 5

A patient with a blocked trachea would have difficulty with which of the following?

Accepted Answer

Conducting air to the lungs

Question 6

Which of the following structures is part of the lower respiratory tract?

Accepted Answer

Bronchi

Question 7

Which region of the pharynx is directly behind the nasal cavity and is involved in equalizing pressure in the middle ear?

Accepted Answer

Nasopharynx

Question 8

If the larynx fails to block food from entering the lower respiratory tract, which structure is most at risk for obstruction?

Accepted Answer

Trachea

Question 9

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 accommodates the cardiac notch for the heart

Question 10

Which of the following is the correct order of airflow through the respiratory tract, starting from the nose?

Accepted Answer

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

Question 11

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

Accepted Answer

Prevents food from entering the trachea during swallowing

Question 12

A patient with damage to the pseudostratified ciliated columnar epithelium in the trachea would most likely experience which of the following problems?

Accepted Answer

Reduced ability to clear mucus and foreign particles from the airway

Question 13

Which of the following statements about the conducting and respiratory zones is correct?

Accepted Answer

The conducting zone includes structures from the nose to the terminal bronchioles, while the respiratory zone includes respiratory bronchioles and alveoli

Question 14

Which of the following best explains why the trachea contains rings of cartilage?

Accepted Answer

To keep the airway open for continuous airflow

Question 15

A pulmonary embolus can cause alveolar dead space. Which of the following best describes this condition?

Accepted Answer

Alveoli are ventilated but not perfused with blood

Question 16

Which of the following is the correct formula for total physiologic dead space in the lungs?

Accepted Answer

$$D_{phys} = D_{anat} + D_{alv}$$

Question 17

During inspiration, which of the following changes occurs in the thoracic cavity?

Accepted Answer

Thoracic volume increases as the diaphragm contracts and flattens

Question 18

Which of the following tissues lines the alveoli and is essential for efficient gas exchange?

Accepted Answer

Simple squamous epithelium

Question 19

A newborn with respiratory distress syndrome is most likely experiencing problems due to a lack of which substance?

Accepted Answer

Surfactant

Question 20

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

Accepted Answer

Increase turbulence and contact between air and mucosa to warm, humidify, and filter air

Study Guide: The Respiratory System (Chapter 22)

Guida di studio - Domande di pratica

Study guide - Flashcard