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 is correct regarding a feedback cycle?

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

Negative feedback loops help maintain homeostasis by reducing the effect of changes.

Negative feedback loops amplify changes and move the system away from equilibrium.

Positive feedback loops help maintain homeostasis by counteracting changes.

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Verified step by step guidance

Understand the concept of feedback loops: Feedback loops are biological mechanisms that help maintain stability or homeostasis in the body. They can be either positive or negative.

Identify the characteristics of negative feedback loops: Negative feedback loops work to reduce or counteract changes, helping to maintain equilibrium or homeostasis. They are more common in the body than positive feedback loops.

Identify the characteristics of positive feedback loops: Positive feedback loops amplify changes and move the system away from equilibrium. They are less common and are typically used in processes that need a definitive endpoint, such as childbirth.

Evaluate the statements given in the problem: Compare each statement with the characteristics of positive and negative feedback loops to determine which is correct.

Conclude that the correct statement is: 'Negative feedback loops help maintain homeostasis by reducing the effect of changes.' This aligns with the definition and function of negative feedback loops in the body.