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

1. Introduction to Anatomy & Physiology

Feedback Loops: Negative Feedback

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Feedback Loops: Negative Feedback

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Multiple Choice

What is the primary function of a negative feedback loop in the human body?

It initiates a new physiological process.

It prevents any response to external stimuli.

It amplifies changes to accelerate a process.

It counteracts changes to maintain homeostasis.

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Verified step by step guidance

Understand the concept of homeostasis: Homeostasis refers to the body's ability to maintain a stable internal environment despite external changes. This stability is crucial for proper functioning of physiological processes.

Learn about negative feedback loops: Negative feedback loops are mechanisms that counteract deviations from a set point in the body. They work to restore balance by reversing the direction of the change.

Identify examples of negative feedback in the body: Common examples include regulation of body temperature, blood glucose levels, and blood pressure. For instance, if body temperature rises, mechanisms like sweating are activated to cool the body down.

Compare negative feedback to positive feedback: Negative feedback reduces or counteracts changes, while positive feedback amplifies changes (e.g., during childbirth, oxytocin release increases contractions). Negative feedback is more common in maintaining homeostasis.

Conclude that the primary function of a negative feedback loop is to counteract changes and maintain homeostasis, ensuring the body remains in a stable and functional state.