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

$$P_{\text{gas}} = \frac{n_{\text{gas}}}{n_{\text{total}}} \times P_{\text{total}}$$

Question 1

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

Accepted Answer

To supply oxygen and eliminate carbon dioxide

Question 2

Which process is responsible for the exchange of oxygen and carbon dioxide between the lungs and the blood?

Accepted Answer

External respiration

Question 3

A patient presents with pleurisy. Which anatomical structure is directly affected?

Accepted Answer

Pleural membranes

Question 4

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

Accepted Answer

Gas exchange between blood and alveoli

Question 5

During an asthma attack, which change in the bronchioles most directly contributes to airway resistance?

Accepted Answer

Increase in smooth muscle contraction

Question 6

Which equation best represents the overall process of cellular respiration as it relates to the respiratory system?

Accepted Answer

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

Question 7

Which structure is the site of actual gas exchange in the lungs?

Accepted Answer

Alveoli

Question 8

A person inhales a dust particle. Which feature of the respiratory tract is most responsible for preventing the particle from reaching the alveoli?

Accepted Answer

Cilia and mucus in the conducting zone

Question 9

Which of the following best explains why pulmonary circulation is considered a low-pressure, high-volume system?

Accepted Answer

Blood must travel a short distance from heart to lungs

Question 10

Which cell type in the alveoli is responsible for releasing surfactant to decrease surface tension?

Accepted Answer

Type II alveolar cells

Question 11

Which of the following is a consequence of smoking on the respiratory tract?

Accepted Answer

Destruction of cilia, leading to accumulation of mucus

Question 12

Which equation describes the partial pressure of a gas in a mixture?

Accepted Answer

$$P_{	ext{gas}} = \frac{n_{	ext{gas}}}{n_{	ext{total}}} 	imes P_{	ext{total}}$$

Question 13

Which anatomical change occurs as the conducting zone transitions to the respiratory zone?

Accepted Answer

Epithelium changes from pseudostratified columnar to cuboidal

Question 14

Which of the following best describes the role of the nervous system in respiration?

Accepted Answer

It regulates respiratory rate, volume, and gas levels

Question 15

A patient is unable to speak after a traumatic injury. Which structure is most likely damaged?

Accepted Answer

Larynx

Question 16

Which process is described by the movement of air into and out of the lungs?

Accepted Answer

Pulmonary ventilation

Question 17

Which of the following is a direct effect of sympathetic stimulation on the bronchioles?

Accepted Answer

Bronchodilation

Question 18

Which structure is NOT part of the conducting zone of the respiratory system?

Accepted Answer

Alveoli

Question 19

Which of the following best explains why sinusitis can lead to a sinus headache?

Accepted Answer

Inflammation causes absorption of air, producing a vacuum

Question 20

Which equation best represents the transport of oxygen in the blood?

Accepted Answer

$$\mathrm{O_2$} + \mathrm{Hb} \rightarrow \mathrm{$$HbO_2$$}$$

Chapter 22: The Respiratory System – Overview and Anatomy

스터디 가이드 - 연습 문제