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

Feedback regulation includes which of the following mechanisms?

Only positive feedback

Feedforward regulation only

Only negative feedback

Negative feedback and positive feedback

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Verified step by step guidance

Understand the concept of feedback regulation: Feedback regulation is a biological mechanism where the output of a process influences the activity of the process itself. It can be categorized into positive feedback and negative feedback.

Define negative feedback: Negative feedback occurs when the output of a system inhibits or reduces the activity of the system, helping to maintain homeostasis. For example, the regulation of blood glucose levels by insulin is a negative feedback mechanism.

Define positive feedback: Positive feedback occurs when the output of a system enhances or amplifies the activity of the system. This is less common but is seen in processes like childbirth, where the release of oxytocin intensifies uterine contractions.

Clarify feedforward regulation: Feedforward regulation is a mechanism where a system anticipates changes and adjusts its activity before the change occurs. This is different from feedback regulation, which responds to changes after they occur.

Conclude that feedback regulation includes both positive and negative feedback mechanisms, as these are the primary ways biological systems maintain balance and respond to changes in the environment.