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 is an example of a negative feedback mechanism in the human body?

Action potential propagation in neurons

Regulation of blood glucose levels by insulin

Blood clotting process

Release of oxytocin during childbirth

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Verified step by step guidance

Understand the concept of negative feedback mechanisms: Negative feedback is a process that counteracts a change in a physiological variable to maintain homeostasis. When a change is detected, the system responds to reverse the direction of that change.

Identify the role of insulin in blood glucose regulation: Insulin is a hormone produced by the pancreas that helps lower blood glucose levels. When blood glucose levels rise, insulin is released to facilitate the uptake of glucose by cells, thereby reducing blood glucose levels.

Recognize how insulin exemplifies negative feedback: In the regulation of blood glucose levels, the increase in glucose triggers the release of insulin, which acts to decrease glucose levels, thus reversing the initial change and maintaining homeostasis.

Differentiate between negative and positive feedback: Positive feedback amplifies a change or process, such as the release of oxytocin during childbirth, which intensifies contractions. Negative feedback, like insulin regulation, works to stabilize and counteract changes.

Conclude why regulation of blood glucose levels by insulin is a negative feedback mechanism: The process involves detecting a rise in blood glucose, responding by releasing insulin, and subsequently lowering glucose levels, which exemplifies the counteractive nature of negative feedback.