Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

22. The Respiratory System

Introduction to Lung Physiology

Anatomy & Physiology

22. The Respiratory System

Introduction to Lung Physiology

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Multiple Choice

How can the respiratory system compensate for a drop in blood H+ concentrations?

By increasing the rate and depth of breathing to expel more CO2

By decreasing the rate and depth of breathing to retain more CO2

By increasing the production of bicarbonate ions in the blood

By decreasing the production of bicarbonate ions in the blood

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Verified step by step guidance

Understand the relationship between CO2 and blood pH: CO2 in the blood can combine with water to form carbonic acid, which dissociates into hydrogen ions (H+) and bicarbonate ions (HCO3-). Therefore, CO2 levels can influence blood pH.

Recognize the role of the respiratory system in regulating blood pH: The respiratory system can adjust the rate and depth of breathing to control CO2 levels, thereby influencing blood pH.

Identify the effect of decreased blood H+ concentrations: A drop in H+ concentration indicates a higher pH (alkalosis). To compensate, the body needs to increase H+ concentration to lower the pH back to normal.

Determine the respiratory response to alkalosis: To increase H+ concentration, the respiratory system can decrease the rate and depth of breathing, which retains CO2. Retained CO2 will increase H+ concentration through the formation of carbonic acid.

Consider the role of bicarbonate ions: While the respiratory system primarily adjusts CO2 levels, the kidneys can also regulate bicarbonate ions to help maintain acid-base balance. However, the immediate response to changes in blood pH is typically through respiratory adjustments.