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 of the following statements regarding positive feedback is NOT correct?

Positive feedback amplifies changes in a system.

Positive feedback is commonly used to maintain homeostasis.

An example of positive feedback is the release of oxytocin during childbirth.

Positive feedback can lead to a rapid change in the system.

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Verified step by step guidance

Understand the concept of positive feedback: Positive feedback is a process that amplifies or increases the output of a system. It is often used to drive processes to completion rather than maintain equilibrium.

Identify the role of positive feedback in physiological processes: Positive feedback is typically involved in processes that need a definitive endpoint, such as childbirth, where the release of oxytocin intensifies contractions until delivery occurs.

Differentiate between positive and negative feedback: Negative feedback is more commonly associated with maintaining homeostasis, as it works to counteract changes and bring the system back to a set point.

Analyze the given statements: Evaluate each statement to determine if it aligns with the characteristics of positive feedback. Positive feedback amplifies changes, can lead to rapid changes, and is exemplified by oxytocin release during childbirth.

Identify the incorrect statement: The statement 'Positive feedback is commonly used to maintain homeostasis' is incorrect because positive feedback is not typically used for maintaining homeostasis; that role is usually filled by negative feedback mechanisms.