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

Homeostasis

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Homeostasis

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Multiple Choice

Which of the following is an example of positive feedback?

release of glucagon to increase a lower-than-normal level of glucose in the blood

labor contractions causing the release of oxytocin, which results in an increase in the quantity of labor contractions

shivering to generate heat when body temperature is below normal

release of insulin to decrease a high level of glucose in the blood

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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. They can be either positive or negative.

Define positive feedback: Positive feedback amplifies or increases the occurrence of events. It is a process where the output of a system acts to enhance the changes to the input of the system.

Identify examples of positive feedback: In the context of physiology, positive feedback is less common than negative feedback. A classic example is labor contractions during childbirth.

Analyze the given options: Evaluate each option to determine if it represents positive feedback. Positive feedback should involve a process that enhances or increases the initial stimulus.

Select the correct example: Labor contractions causing the release of oxytocin, which results in an increase in the quantity of labor contractions, is an example of positive feedback because the release of oxytocin intensifies the contractions, further promoting the process.