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

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 best represents a negative feedback loop in the human body?

The dilation of blood vessels in response to cold temperatures

The increase in heart rate during exercise to supply muscles with more oxygen

The release of insulin to lower blood glucose levels after a meal

The release of oxytocin to intensify uterine contractions during childbirth

Previous problemNext problem

Verified step by step guidance

Understand the concept of a negative feedback loop: Negative feedback loops are mechanisms that counteract changes in a system to maintain homeostasis. When a change occurs, the system responds to reverse the direction of that change.

Analyze the options provided: Each option describes a physiological response. Determine which response involves reversing a change to maintain balance.

Evaluate the dilation of blood vessels in response to cold temperatures: This is a response to conserve heat, not to reverse a change, thus not a negative feedback loop.

Consider the increase in heart rate during exercise: This is a response to meet increased oxygen demand, not to reverse a change, thus not a negative feedback loop.

Examine the release of insulin to lower blood glucose levels after a meal: This response lowers elevated blood glucose levels, reversing the change and maintaining homeostasis, which is characteristic of a negative feedback loop.