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

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Feedback Loops

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Multiple Choice

Which of the following statements about feedback loops is false?

Negative feedback loops typically reinforce the initial stimulus, leading to greater instability.

Positive feedback loops amplify changes and can lead to a rapid departure from homeostasis.

Negative feedback loops help maintain homeostasis by reversing a change in a controlled condition.

Positive feedback loops are less common in the body than negative feedback loops.

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Verified step by step guidance

Understand the concept of feedback loops: Feedback loops are mechanisms the body uses to maintain homeostasis. They are categorized into negative feedback loops and positive feedback loops.

Clarify negative feedback loops: Negative feedback loops work to reverse a change in a controlled condition, bringing the system back to its set point. For example, if body temperature rises, mechanisms like sweating are activated to cool the body down.

Clarify positive feedback loops: Positive feedback loops amplify the initial stimulus, leading to a greater change in the same direction. These loops are less common and are typically used in processes like childbirth (oxytocin release) or blood clotting.

Analyze the statements: Review each statement in the problem and compare it to the definitions of negative and positive feedback loops. Identify which statement contradicts the established definitions.

Identify the false statement: The false statement is the one that incorrectly describes negative feedback loops as reinforcing the initial stimulus, which is actually a characteristic of positive feedback loops.