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: Positive Feedback

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Feedback Loops: Positive Feedback

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Multiple Choice

Which option describes a positive feedback mechanism?

A feedback loop that primarily functions to maintain homeostasis by counteracting deviations.

A mechanism that involves the release of hormones to decrease blood glucose levels.

A process that amplifies changes and moves the system away from its starting state.

A process that reduces changes and maintains the system in a stable state.

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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.

Differentiate between positive and negative feedback: Negative feedback mechanisms counteract changes to maintain stability, while positive feedback mechanisms amplify changes, moving the system away from its starting state.

Identify examples of positive feedback: Common examples include the process of childbirth, where the release of oxytocin increases contractions, and blood clotting, where the activation of clotting factors accelerates the process.

Analyze the options given: Look for the option that describes a process that amplifies changes and moves the system away from its starting state, which is characteristic of positive feedback.

Select the correct option: Choose the option that correctly describes a positive feedback mechanism, which is the process that amplifies changes and moves the system away from its starting state.