Oxygen and carbon dioxide move between air and blood by simple diffusion. Which of the following statements is true?

from an area of high to low partial pressure

from an area of low to high partial pressure

pressure is not involved in gas exchange

The work of breathing includes all of the following except:

Tissue compliance work (elastic resistance)

Tissue resistance work (non-elastic resistance)

Airway resistance work (non-elastic resistance)

Interesting Trivia Facts About Oxygen! Quiz

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| By Dee Erickson

Dee Erickson

Community Contributor

Quizzes Created: 5 | Total Attempts: 1,328

Questions: 5 | Attempts: 230 | Updated: Mar 21, 2023

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Questions and Answers

1.

The primary function of the respiratory system is to move oxygen into the venous blood and carbon dioxide out.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The primary function of the respiratory system is to facilitate the exchange of gases, specifically moving oxygen into the bloodstream and removing carbon dioxide. This process occurs through the lungs, where oxygen is inhaled and transported to the bloodstream, while carbon dioxide is expelled from the bloodstream and exhaled. Therefore, the statement "The primary function of the respiratory system is to move oxygen into the venous blood and carbon dioxide out" is true.

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2.

Oxygen and carbon dioxide move between air and blood by simple diffusion. Which of the following statements is true?
- A.
  
  From an area of low to high partial pressure
- B.
  
  From an area of high to low partial pressure
- C.
  
  Pressure is not involved in gas exchange
Correct Answer
B. From an area of high to low partial pressure

Explanation
Oxygen and carbon dioxide move between air and blood by simple diffusion, which means they move from an area of high partial pressure to an area of low partial pressure. This is because gases naturally move from areas of higher concentration to areas of lower concentration in order to achieve equilibrium. Therefore, the correct statement is that they move from an area of high to low partial pressure.

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3.

During inspiration (lung expansion) the volume in our lungs ______________and the pressure ___________.
- A.
  
  Increases and increases
- B.
  
  Increases and decreases
- C.
  
  Decreases and decreases
- D.
  
  Decreases and increases
Correct Answer
B. Increases and decreases

Explanation
During inspiration (lung expansion) the volume in our lungs increases as the diaphragm contracts and moves downward, and the pressure decreases as the chest cavity expands. This creates a pressure gradient that allows air to flow into the lungs.

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4.

The work of breathing includes all of the following except:
- A.
  
  Tissue compliance work (elastic resistance)
- B.
  
  Tissue resistance work (non-elastic resistance)
- C.
  
  Airway resistance work (non-elastic resistance)
- D.
  
  Rest and relaxation
Correct Answer
D. Rest and relaxation

Explanation
The work of breathing refers to the energy required to inhale and exhale air. Tissue compliance work refers to the effort needed to overcome the elastic resistance of the lung tissue during breathing. Tissue resistance work refers to the effort needed to overcome the non-elastic resistance in the lung tissue. Airway resistance work refers to the effort needed to overcome the non-elastic resistance in the airways. Rest and relaxation, on the other hand, does not require any energy expenditure for breathing and is not considered part of the work of breathing.

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5.

Pulmonary disease is frequently related to an increased "work" of breathing.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
Pulmonary disease often leads to difficulties in breathing, causing the individual to exert more effort to inhale and exhale. This increased "work" of breathing is a common symptom of pulmonary diseases such as chronic obstructive pulmonary disease (COPD) and asthma. These conditions can result in narrowed airways, inflammation, and reduced lung function, making it harder for the individual to breathe normally. Therefore, it is true that pulmonary disease is frequently associated with an increased "work" of breathing.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Apr 02, 2015

Quiz Created by
Dee Erickson

Interesting Trivia Facts About Oxygen! Quiz

The primary function of the respiratory system is to move oxygen into the venous blood and carbon dioxide out.

Oxygen and carbon dioxide move between air and blood by simple diffusion. Which of the following statements is true?

During inspiration (lung expansion) the volume in our lungs ______________and the pressure ___________.

The work of breathing includes all of the following except:

Pulmonary disease is frequently related to an increased "work" of breathing.

During inspiration (lung expansion) the volume in our lungs ____and the pressure _.