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

Which of the following statements regarding negative feedback is false?

An example of negative feedback is the regulation of blood glucose levels by insulin.

In negative feedback, the response reduces the initial stimulus.

Negative feedback mechanisms help maintain homeostasis by reversing a change in a controlled condition.

Negative feedback loops amplify changes in the body to achieve a desired outcome.

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Verified step by step guidance

Understand the concept of negative feedback: Negative feedback is a mechanism in which a change in a physiological variable triggers a response that counteracts the initial change, helping to maintain homeostasis.

Identify the role of negative feedback in homeostasis: Negative feedback mechanisms are crucial for maintaining stable conditions within the body by reversing changes in controlled conditions, such as temperature, pH, and blood glucose levels.

Examine the examples provided: The regulation of blood glucose levels by insulin is a classic example of negative feedback, where insulin reduces blood glucose levels when they rise above normal.

Analyze the statement about negative feedback amplifying changes: Negative feedback does not amplify changes; instead, it reduces or counteracts changes to maintain stability. Amplification of changes is characteristic of positive feedback, not negative feedback.

Determine the false statement: The statement 'Negative feedback loops amplify changes in the body to achieve a desired outcome' is false because it describes positive feedback, not negative feedback.