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

Is blood sugar regulated by negative or positive feedback mechanisms in the body?

Neither negative nor positive feedback

Negative feedback

Both negative and positive feedback

Positive feedback

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Verified step by step guidance

Understand the concept of feedback mechanisms: Feedback mechanisms are processes that help maintain homeostasis in the body. They can be either negative or positive.

Define negative feedback: Negative feedback occurs when a change in a physiological variable triggers a response that counteracts the initial change, bringing the variable back to its set point.

Define positive feedback: Positive feedback amplifies a change in a physiological variable, moving it further away from its set point, often leading to a specific outcome or event.

Apply the concept to blood sugar regulation: Blood sugar levels are regulated by negative feedback mechanisms. When blood sugar rises, insulin is released to lower it, and when blood sugar falls, glucagon is released to raise it, maintaining balance.

Conclude with the correct answer: Blood sugar regulation is an example of negative feedback, as the body works to counteract changes in blood sugar levels to maintain homeostasis.