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

Previous problemNext problem

Struggling with Anatomy & Physiology?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following statements best characterizes positive feedback control of homeostasis?

Positive feedback stabilizes the system by counteracting changes.

Positive feedback is more common than negative feedback in maintaining homeostasis.

Positive feedback amplifies changes and moves the system away from its starting state.

Positive feedback is primarily involved in maintaining constant internal conditions.

Previous problemNext problem

Verified step by step guidance

Understand the concept of homeostasis: Homeostasis is the process by which biological systems maintain stability while adjusting to conditions that are optimal for survival.

Differentiate between positive and negative feedback: Negative feedback mechanisms work to counteract changes, bringing the system back to its set point, while positive feedback mechanisms amplify changes, moving the system further 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 given statements: Evaluate each statement based on your understanding of positive feedback. Positive feedback does not stabilize the system or maintain constant internal conditions; instead, it amplifies changes.

Select the correct characterization: Based on the analysis, the statement 'Positive feedback amplifies changes and moves the system away from its starting state' best characterizes positive feedback control of homeostasis.