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 type of blood vessel has thicker walls and a heavier tunica media?

Capillaries

Venules

Veins

Arteries

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Verified step by step guidance

Step 1: Understand the structure of blood vessels. Blood vessels are categorized into arteries, veins, capillaries, and venules, each with distinct structural features suited to their function.

Step 2: Recall the function of arteries. Arteries are responsible for carrying blood away from the heart under high pressure, which requires them to have thicker walls to withstand this pressure.

Step 3: Examine the layers of blood vessel walls. Blood vessels have three layers: the tunica intima (inner layer), tunica media (middle layer), and tunica externa (outer layer). The tunica media, composed of smooth muscle and elastic fibers, is particularly prominent in arteries.

Step 4: Compare the tunica media of arteries to other blood vessels. Arteries have a much thicker tunica media compared to veins, venules, and capillaries, allowing them to maintain blood pressure and regulate blood flow.

Step 5: Conclude that arteries have thicker walls and a heavier tunica media due to their role in transporting blood under high pressure, distinguishing them from veins, venules, and capillaries.