Home > Anatomy and Physiology > Quizzes > Physiology Practice Test: The Respiratory System - Gas Exchange and Regulation of Breathing
Physiology Practice Test: The Respiratory System - Gas Exchange and Regulation of Breathing
Fast practice, instant feedback. Timer auto-submits when time’s up.
Avg score: 17% • Most missed: “Which of the following can increase the concentration of a particular gas in a s…”

Related Test: Physiology Practice Test: The Respiratory System - Pulmonary Ventilation

Physiology Practice Test: The Respiratory System - Gas Exchange and Regulation of Breathing
Time left 00:00
25 Questions

1. Which of the following is NOT part of the pathway that must be crossed by oxygen on its way to binding with hemoglobin?
2. The chemoreceptor reflex regulates ventilation primarily through sensing changes in blood PO2.
3. At the same partial pressure, all gases in a solution will be at equal concentration.
4. If oxygen is consumed by the body cells at a rate of 300 mL per minute, then how much oxygen diffuses from the alveoli into the blood in the pulmonary capillaries?
5. Inspiratory neurons are located in the ________.
6. The average respiratory quotient at rest and on a mixed diet is 0.5.
7. Which of the following causes a decrease in the PO2 of air as it enters the conducting zone of the lungs?
8. The partial pressure of an individual gas within a mixture of gases is determined by the total pressure of those gases and the fractional concentration of that gas in the mixture.
9. What is labored or difficult breathing called?
10. At equilibrium, which of the following statements is true when helium and nitrogen are present in a gas at equal partial pressures over water?
11. What is a deficiency of oxygen in the tissues called?
12. A decrease in oxygen-carrying capacity can result from alterations in hemoglobin structure or concentration.
13. Bicarbonate is an important buffer in blood, whose concentration is regulated by the ________.
14. At sea level, what is the normal partial pressure of oxygen in alveolar air?
15. When the blood becomes ________, it can lead to a depression in the activity of the central nervous system.
16. Respiratory acidosis will result from a(n) ________.
17. Which of the following will increase the loading of oxygen onto the hemoglobin molecule within the lungs?
18. Within an erythrocyte, the conversion of CO2 to bicarbonate is prevented from reaching equilibrium by the ________.
19. At equilibrium, the gas molecules that dissolve in solution and those that remain in the gaseous phase are, by definition, at the same ________.
20. There is a substantial safety margin for the uptake of gases in the alveolus because at rest, blood is completely oxygenated after traveling only 1/3 the length of the pulmonary capillary bed.
21. In the model for quiet breathing, expiration is induced by ________.
22. The relationship between the concentration of a gas in solution and the partial pressure of that gas can be described by ________.
23. Where are the peripheral chemoreceptors in humans?
24. In the model of quiet breathing, the breathing rhythm originated by the central pattern generator activates the ________.
25. Under resting conditions, equilibration between alveolar PO2 and PCO2 with blood PO2 and PCO2 in the pulmonary capillaries is completed by the time the blood has traveled what portion of the distance of the pulmonary capillaries?

⚡ Recently practiced quizzes in this topic
Live quiz activity
Anatomy and Physiology Practice Test: The Lymphatic System, Lymphoid Organs and Tissues Anatomy and Physiology Practice Test: The Skeleton Anatomy and Physiology Practice Test: The Autonomic Nervous System Anatomy and Physiology Practice Test: Chemistry & Life Anatomy and Physiology Practice Test: The Digestive System Anatomy and Physiology Practice Test: Introduction to the Human Body Physiology Practice Test: The Endocrine System - Regulation of Energy Metabolism and Growth Human Physiology Basics Practice Test: Breathing and Exchange of Gases Physiology Practice Test: The Cardiovascular System - Blood Vessels, Blood Flow, and Blood Pressure Physiology Practice Test: The Endocrine System - Endocrine Glands and Hormone Actions
 
❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

🌈  Our mission is to help improve your scores in any subject and exam withonline quizzes, practice tests, study guides, & advice for students. Since 2018.
About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |
Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.