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 type of feedback mechanism is primarily responsible for maintaining blood glucose levels?

Negative feedback

Feedforward control

Positive feedback

Homeostatic imbalance

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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 by regulating physiological functions. They can be negative or positive.

Define negative feedback: Negative feedback is a mechanism that counteracts a change in a physiological variable by initiating responses that bring the variable back to its set point. It is the most common feedback mechanism in the body.

Explore how negative feedback applies to blood glucose regulation: When blood glucose levels rise, the pancreas releases insulin, which helps cells absorb glucose, lowering blood glucose levels back to normal. Conversely, when blood glucose levels drop, the pancreas releases glucagon, which stimulates the release of glucose into the blood.

Contrast negative feedback with positive feedback: Positive feedback amplifies changes rather than counteracting them. It is less common and typically involved in processes like childbirth, where the response intensifies until a specific event occurs.

Consider other options: Feedforward control anticipates changes and adjusts the system before the change occurs, while homeostatic imbalance refers to a disruption in homeostasis, not a feedback mechanism.