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

21. The Immune System

Introduction to Cell Communication

Anatomy & Physiology

21. The Immune System

Introduction to Cell Communication

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Multiple Choice

Which of the following is a mechanism that helps maintain homeostasis by explaining or making excuses for deviations from normal behavior?

Positive feedback

Compensation

Negative feedback

Rationalization

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Verified step by step guidance

Begin by understanding the concept of homeostasis, which is the body's ability to maintain a stable internal environment despite changes in external conditions.

Identify the mechanisms that the body uses to maintain homeostasis: positive feedback, negative feedback, and compensation.

Positive feedback amplifies changes and moves the system away from its normal state, often used in processes like childbirth.

Negative feedback counteracts changes, bringing the system back to its normal state, such as regulating body temperature or blood glucose levels.

Compensation involves physiological adjustments to counteract deviations from normal behavior, but rationalization is a psychological mechanism, not a physiological one, and does not directly relate to maintaining homeostasis.