Multiple Choice
In respiration, what is the primary function of the respiratory membrane (alveolar-capillary membrane) in the lungs?
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22. The Respiratory System
Respiration
Back22. The Respiratory System
Respiration
- Multiple ChoiceIn the lungs, what structures together form the respiratory membrane (alveolar-capillary membrane) where gas exchange occurs?1views
- Multiple ChoiceWhich of the following factors influence the rate and depth of breathing?79views
- Textbook Question
You and a friend are having a contest to see who can hold his or her breath the longest. Your friend hyperventilates before holding his breath, and subsequently wins the contest. Why did hyperventilation give him an advantage?
431views - Textbook Question
Which of the following determines the direction of gas movement?
a. Solubility in water
b. Partial pressure gradient
c. Temperature
d. Molecular weight and size of the gas molecule
612views - Multiple ChoiceThe movement of air into and out of the lungs is called __________.2254views
- Multiple Choice
When determining the directions that molecules will move in external and internal respiration:
575views11rank - Textbook Question
Henry's law states that the degree to which a gas dissolves in a liquid is determined by its:
a. Partial pressure
b. Solubility
c. Surface tension
d. Both a and b are correct
e. All of the above are correct
479views - Textbook Question
What three integrated steps are involved in external respiration?
638views - Multiple ChoiceHenry's law states that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture.1721views
- Multiple ChoiceHenry's law states that when a gas is in contact with a liquid, that gas will dissolve in the liquid in proportion to its partial pressure.1927views4rank
- Textbook Question
What is the significance of
(c) Henry's law to the process of respiration?
635views - Textbook Question
What is the significance of
(b) Dalton's law, to the process of respiration?
573views - Textbook Question
When the alveolar Pco₂ decreases, the pulmonary arterioles_____. When the arteriolar Pco₂ increases, the bronchioles_______.
443views - Textbook Question
Which of the following does not occur in internal respiration?
(a) Oxygen diffuses from the blood to the interstitial spaces.
(b) Carbon dioxide diffuses from the interstitial spaces to the blood.
(c) Hemoglobin binds more oxygen.
(d) Bicarbonate ions are formed in red blood cells.
(e) Chloride ions diffuse into red blood cells as bicarbonate ions diffuse out.
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