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

19. The Blood Vessels

Capillaries

Anatomy & Physiology

19. The Blood Vessels

Capillaries

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 are the thinnest blood vessels in the human body?

Arteries

Arterioles

Capillaries

Veins

Previous problemNext problem

Verified step by step guidance

Begin by understanding the structure and function of different types of blood vessels in the human body. Blood vessels are categorized into arteries, arterioles, capillaries, and veins, each serving distinct roles in the circulatory system.

Arteries are large blood vessels that carry oxygenated blood away from the heart to the tissues. They have thick walls to withstand high pressure from the heart's pumping action.

Arterioles are smaller branches of arteries that lead to capillaries. They have muscular walls that help regulate blood flow and pressure as blood moves towards the capillaries.

Capillaries are the smallest and thinnest blood vessels, consisting of a single layer of endothelial cells. Their thin walls facilitate the exchange of oxygen, nutrients, and waste products between blood and tissues.

Veins are blood vessels that carry deoxygenated blood back to the heart. They have thinner walls compared to arteries but are thicker than capillaries, and they often contain valves to prevent backflow of blood.