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 NOT an example of a negative feedback mechanism in the human body?

Regulation of blood pressure by baroreceptors

Blood clotting process

Body temperature regulation through sweating

Regulation of blood glucose levels by insulin

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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 body initiates a response to bring the variable back to its set point.

Examine each option to determine if it involves negative feedback: Negative feedback mechanisms typically involve a sensor, control center, and effector that work together to reverse a change.

Consider the regulation of blood pressure by baroreceptors: Baroreceptors detect changes in blood pressure and send signals to the brain, which then adjusts heart rate and blood vessel diameter to stabilize blood pressure. This is a negative feedback mechanism.

Analyze body temperature regulation through sweating: When body temperature rises, sweat glands produce sweat, which evaporates and cools the body down, returning temperature to normal. This is another example of negative feedback.

Evaluate the blood clotting process: Blood clotting is a positive feedback mechanism, where the initial clotting triggers more clotting until the wound is sealed. This process amplifies the response rather than reversing it, making it not an example of negative feedback.