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

Introduction to Blood Vessels

Anatomy & Physiology

19. The Blood Vessels

Introduction to Blood Vessels

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Multiple Choice

Which blood vessels become progressively smaller and branch as they extend away from the heart?

Capillaries

Arteries

Venules

Veins

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Verified step by step guidance

Step 1: Begin by understanding the structure and function of the circulatory system. The heart pumps blood into large vessels, which progressively branch into smaller vessels to distribute blood throughout the body.

Step 2: Recall the hierarchy of blood vessels. Arteries are the large vessels that carry oxygenated blood away from the heart. They branch into smaller arteries and eventually into arterioles as they extend further from the heart.

Step 3: Understand the role of capillaries. Capillaries are the smallest blood vessels where the exchange of gases, nutrients, and waste occurs between blood and tissues. They are formed from the branching of arterioles.

Step 4: Compare arteries to veins and venules. Veins carry deoxygenated blood back to the heart, and venules are small veins that collect blood from capillaries. These vessels do not branch progressively smaller as arteries do.

Step 5: Conclude that arteries are the blood vessels that become progressively smaller and branch as they extend away from the heart, leading to arterioles and then capillaries.