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 best explains the feedback mechanism that regulates blood glucose levels?

Positive feedback involving adrenaline and cortisol

Negative feedback involving insulin and glucagon

Negative feedback involving thyroid hormones

Positive feedback involving growth hormone

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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 regulating physiological functions. They can be either positive or negative.

Identify the role of insulin and glucagon: Insulin and glucagon are hormones that play a crucial role in regulating blood glucose levels. Insulin decreases blood glucose levels, while glucagon increases them.

Recognize the type of feedback involved: Negative feedback mechanisms work to counteract changes in the body, bringing it back to a set point. In the case of blood glucose regulation, when blood glucose levels rise, insulin is released to lower them, and when they fall, glucagon is released to raise them.

Distinguish between positive and negative feedback: Positive feedback amplifies changes, while negative feedback reduces them. Blood glucose regulation is an example of negative feedback because it aims to stabilize blood glucose levels.

Conclude with the correct feedback mechanism: The regulation of blood glucose levels is best explained by negative feedback involving insulin and glucagon, as these hormones work together to maintain stable blood glucose levels.