QUESTION 38 Which of the following statements is FALSE? O O C The partial pressure of O2 in the alveoli is higher than it is in the pulmonary capillaries so O2 diffuses from the alveoli to the pulmonary capillaries. The partial pressure of CO2 in the alveoli is 40 mm Hg and in the pulmonary capillaries it is 46 mm Hg. Although this is not a big pressure gradient, CO2 is very soluble so it diffuses from the pulmonary capillaries to the alveoli where it then is exhaled. The partial pressure of O2 in the systemic capillaries is higher than it is in the body cells so O2 diffuses from the systemic capillaries to the body cells. The partial pressure of CO2 in the systemic capillaries is higher than it is in the body cells so CO2 diffuses from the systemic capillaries to the body cells. 0

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Question 38**

Which of the following statements is **FALSE**?

- The partial pressure of O₂ in the alveoli is higher than it is in the pulmonary capillaries so O₂ diffuses from the alveoli to the pulmonary capillaries.

- The partial pressure of CO₂ in the alveoli is 40 mm Hg and in the pulmonary capillaries it is 46 mm Hg. Although this is not a big pressure gradient, CO₂ is very soluble so it diffuses from the pulmonary capillaries to the alveoli where it then is exhaled.

- The partial pressure of O₂ in the systemic capillaries is higher than it is in the body cells so O₂ diffuses from the systemic capillaries to the body cells.

- The partial pressure of CO₂ in the systemic capillaries is higher than it is in the body cells so CO₂ diffuses from the systemic capillaries to the body cells.
Transcribed Image Text:**Question 38** Which of the following statements is **FALSE**? - The partial pressure of O₂ in the alveoli is higher than it is in the pulmonary capillaries so O₂ diffuses from the alveoli to the pulmonary capillaries. - The partial pressure of CO₂ in the alveoli is 40 mm Hg and in the pulmonary capillaries it is 46 mm Hg. Although this is not a big pressure gradient, CO₂ is very soluble so it diffuses from the pulmonary capillaries to the alveoli where it then is exhaled. - The partial pressure of O₂ in the systemic capillaries is higher than it is in the body cells so O₂ diffuses from the systemic capillaries to the body cells. - The partial pressure of CO₂ in the systemic capillaries is higher than it is in the body cells so CO₂ diffuses from the systemic capillaries to the body cells.
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Step 1: Introduction:

A biological system called the respiratory system includes particular organs and tissues that are employed for gas exchange.

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