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

19. The Blood Vessels

Capillaries

Anatomy & Physiology

19. The Blood Vessels

Capillaries

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Multiple Choice

A metarteriole is a vessel that __________.

returns interstitial fluid to the circulation

is intermediate between the arteriole and the capillary bed

drains the capillary bed

is intermediate between a capillary and a venule

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Verified step by step guidance

Begin by understanding the structure and function of a metarteriole. A metarteriole is a type of blood vessel that serves as a transitional vessel between an arteriole and a capillary bed.

Recognize that metarterioles play a crucial role in microcirculation, which is the circulation of blood in the smallest blood vessels, including capillaries, arterioles, and venules.

Identify the primary function of metarterioles. They regulate blood flow into the capillary beds by acting as a bypass channel, allowing blood to flow directly from arterioles to venules when capillaries are closed.

Understand that metarterioles are not involved in returning interstitial fluid to the circulation. This function is typically performed by lymphatic vessels.

Conclude that the correct description of a metarteriole is that it is intermediate between the arteriole and the capillary bed, facilitating the transition and regulation of blood flow in microcirculation.