$$P_{O_2$} = F_{O_2$} \times (P_{atm} - P_{H_2O})$$

Question 1

Which of the following structures is responsible for warming, humidifying, and filtering air as it enters the respiratory system?

Accepted Answer

Nasal Cavity

Question 2

A patient presents with a sinus infection affecting the maxillary sinus. Which of the following symptoms is most likely to occur?

Accepted Answer

Pain in the upper jaw and teeth

Question 3

Which cell type in the alveoli is primarily responsible for gas exchange?

Accepted Answer

Type I Cell

Question 4

During swallowing, which structure prevents food from entering the trachea?

Accepted Answer

Epiglottis

Question 5

A patient with damage to the medulla oblongata would most likely experience which of the following?

Accepted Answer

Difficulty regulating breathing

Question 6

Which of the following best describes the function of the paranasal sinuses?

Accepted Answer

They lighten the weight of the skull and help warm and moisten air.

Question 7

Which equation best represents the relationship between pressure and volume in the thoracic cavity during inspiration?

Accepted Answer

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

Question 8

A patient has a tumor in the right lung affecting the horizontal fissure. Which lobe is most likely to be impacted?

Accepted Answer

Middle lobe

Question 9

Which of the following is NOT a function of the tracheal cartilage?

Accepted Answer

Facilitating gas exchange

Question 10

Which structure is directly responsible for the production of sound?

Accepted Answer

Vocal folds

Question 11

A patient with a punctured parietal pleura is at risk for which condition?

Accepted Answer

Pneumothorax

Question 12

Which of the following best describes the role of Type II alveolar cells?

Accepted Answer

They secrete surfactant to reduce surface tension.

Question 13

Which of the following is the correct sequence of airflow from the nasal cavity to the alveoli?

Accepted Answer

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

Question 14

Which muscle is primarily responsible for increasing the volume of the thoracic cavity during inspiration?

Accepted Answer

Diaphragm

Question 15

A patient with a deviated septum would most likely experience which of the following?

Accepted Answer

Difficulty breathing through one nostril

Question 16

Which of the following best describes the function of the ciliated pseudostratified columnar epithelium in the trachea?

Accepted Answer

It moves mucus and trapped particles upward toward the pharynx.

Question 17

Which of the following is a function of the larynx?

Accepted Answer

Production of sound

Question 18

Which equation describes the partial pressure of oxygen in the alveoli?

Accepted Answer

$$P_{O_2$} = F_{O_2$} 	imes (P_{atm} - P_{H_2O})$$

Question 19

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 heart.

Question 20

A patient with a blocked eustachian tube may experience which of the following symptoms?

Accepted Answer

Ear pain and pressure

Anatomy & Physiology II: Respiratory System Study Notes

Study Guide - Practice Questions