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

Compared to veins, arteries have __________.

lower blood pressure

thicker walls

larger lumens

more valves

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Verified step by step guidance

Understand the structural differences between arteries and veins: Arteries are responsible for carrying blood away from the heart under high pressure, while veins return blood to the heart under lower pressure.

Recall that arteries need to withstand higher blood pressure due to the force exerted by the heart during systole. This requires arteries to have thicker walls composed of smooth muscle and elastic tissue.

Compare the lumen size: Veins have larger lumens compared to arteries to accommodate the lower pressure and larger volume of blood returning to the heart.

Consider the presence of valves: Veins have more valves to prevent backflow of blood, especially in the extremities, due to the lower pressure and the need to fight gravity.

Conclude that the correct answer is 'thicker walls,' as arteries have thicker walls to handle higher blood pressure compared to veins.