Q: Which equation best represents the overall process of cellular respiration that the respiratory system supports?

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

Question 1

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

Accepted Answer

To supply the body with O$$_2$$ for cellular respiration and dispose of CO$$_2$$, a waste product

Question 2

Which process is responsible for the movement of air into and out of the lungs?

Accepted Answer

Pulmonary ventilation

Question 3

During external respiration, what is the main event occurring?

Accepted Answer

Exchange of O$$_2$$ and CO$$_2$$ between lungs and blood

Question 4

Which of the following is NOT considered a major organ of the upper respiratory system?

Accepted Answer

Larynx

Question 5

A patient presents with difficulty in speech and a reduced sense of smell. Which system is most likely affected?

Accepted Answer

Respiratory system

Question 6

Which of the following correctly matches the process with its description?

Accepted Answer

Pulmonary ventilation: movement of air into and out of lungs

Question 7

Which equation best represents the overall process of cellular respiration that the respiratory system supports?

Accepted Answer

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

Question 8

Which of the following is a function shared by both the respiratory and circulatory systems?

Accepted Answer

Transport of O$$_2$$ and CO$$_2 in $$the blood

Question 9

If the process of internal respiration is impaired, which of the following would most likely occur?

Accepted Answer

Reduced exchange of O$$_2$$ and CO$$_2$$ between systemic blood vessels and tissues

Question 10

Which structure is responsible for amplifying and enhancing sound quality during speech?

Accepted Answer

Pharynx and oral, nasal, and sinus cavities

Question 11

A person with a blocked trachea is unable to breathe. Which emergency procedure uses air in the victim's lungs to expel the obstruction?

Accepted Answer

Heimlich maneuver

Question 12

Which of the following best explains why the right main bronchus is more likely to be obstructed by a foreign object than the left?

Accepted Answer

It is wider, shorter, and more vertical

Question 13

Which tissue type lines the superior portion of the larynx?

Accepted Answer

Stratified squamous epithelium

Question 14

Which of the following is a direct consequence of smoking on the tracheal mucosa?

Accepted Answer

Destruction of cilia, leading to accumulation of mucus

Question 15

Which structure acts as a sphincter to prevent air passage during Valsalva’s maneuver?

Accepted Answer

Vocal folds

Question 16

Which of the following is TRUE regarding the alveoli?

Accepted Answer

They are the site of actual gas exchange

Question 17

Which equation describes the diffusion of gases across the respiratory membrane?

Accepted Answer

$$	ext{Rate of diffusion} \propto \frac{A 	imes D 	imes (P_1$ - P_2$)}{T}$$, where $$A is $$area, $$D is $$diffusion coefficient, $$(P_1$ - P_2$) is $$partial pressure difference, and $$T is $$thickness

Question 18

Which of the following is a function of the paranasal sinuses?

Accepted Answer

Lighten the skull, secrete mucus, and help warm and moisten air

Question 19

A patient with inflamed pleurae experiences pain with each breath. What is the most likely diagnosis?

Accepted Answer

Pleurisy

Question 20

Which of the following best describes the role of surfactant in the alveoli?

Accepted Answer

It decreases surface tension, preventing alveolar collapse

Chapter 21 - Respiratory System pt. A

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