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 Heart2h 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 type of feedback begins as a response to a change in the internal environment?

Positive feedback mechanisms.

Negative feedback mechanisms.

Both positive and negative feedback begin this way.

Neither positive nor negative feedback begin this way.

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Verified step by step guidance

Understand the concept of feedback mechanisms: Feedback mechanisms are processes that help maintain homeostasis in the body by responding to changes in the internal environment.

Identify the types of feedback mechanisms: There are two main types of feedback mechanisms - positive feedback and negative feedback.

Define negative feedback: Negative feedback mechanisms work to counteract changes in the internal environment, bringing the system back to its set point. For example, if body temperature rises, mechanisms are activated to lower it.

Define positive feedback: Positive feedback mechanisms amplify changes in the internal environment, moving the system further away from its set point. An example is the release of oxytocin during childbirth, which intensifies contractions.

Determine the initial response: Both positive and negative feedback mechanisms begin as a response to a change in the internal environment, aiming to either counteract or amplify the change.