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

How does feedback inhibition regulate metabolic pathways in the context of negative feedback?

By increasing the production of end products to enhance the pathway's activity.

By activating alternative pathways to bypass the inhibited pathway.

By inhibiting the initial enzyme in the pathway when the end product accumulates.

By permanently deactivating the enzymes involved in the pathway.

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Verified step by step guidance

Understand the concept of feedback inhibition: Feedback inhibition is a regulatory mechanism in which the accumulation of an end product inhibits an enzyme involved in the pathway, preventing the overproduction of that product.

Identify the role of negative feedback in metabolic pathways: Negative feedback is a process where the output of a system acts to reduce or dampen the processes that lead to the output, thus maintaining homeostasis.

Recognize the specific mechanism of feedback inhibition in metabolic pathways: When the concentration of the end product of a pathway increases, it binds to the allosteric site of the initial enzyme in the pathway, reducing its activity.

Explore how this inhibition affects the pathway: By inhibiting the initial enzyme, the pathway slows down or stops, preventing the accumulation of excess end product and conserving resources.

Consider the implications of feedback inhibition: This mechanism ensures that cells do not waste energy and resources producing more of a substance than is needed, maintaining balance within the cell.