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 system?

Release of oxytocin during childbirth

Regulation of blood glucose levels by insulin

Blood clotting during injury

Generation of nerve impulses

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Verified step by step guidance

Understand the concept of negative feedback: Negative feedback is a process that counteracts a change in a physiological variable, bringing it back to a set point or normal range. It helps maintain homeostasis in the body.

Identify the role of insulin in blood glucose regulation: Insulin is a hormone that lowers blood glucose levels by facilitating the uptake of glucose into cells, thus reducing blood sugar levels when they are high.

Recognize how blood glucose regulation fits the negative feedback model: When blood glucose levels rise after eating, the pancreas releases insulin. This action decreases blood glucose levels, which in turn reduces the stimulus for insulin release, thus maintaining balance.

Compare with other examples: The release of oxytocin during childbirth and blood clotting are examples of positive feedback, where the response enhances the original stimulus, not counteracts it.

Conclude that the regulation of blood glucose levels by insulin is a classic example of a negative feedback system, as it works to stabilize blood glucose levels by reducing the initial stimulus.