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 of the following statements about human blood vessels is correct?

All blood vessels contain valves to prevent backflow.

Arteries carry blood away from the heart.

Capillaries are the largest blood vessels in the body.

Veins have thicker walls than arteries.

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Verified step by step guidance

Understand the function of arteries: Arteries are blood vessels that carry blood away from the heart. This is a fundamental characteristic of arteries in the circulatory system.

Evaluate the statement about valves: Not all blood vessels contain valves. Valves are primarily found in veins to prevent the backflow of blood, especially in the limbs.

Consider the size of capillaries: Capillaries are actually the smallest blood vessels in the body, not the largest. They facilitate the exchange of oxygen, carbon dioxide, and other substances between blood and tissues.

Compare the walls of veins and arteries: Arteries have thicker walls than veins because they need to withstand the higher pressure of blood being pumped from the heart. Veins have thinner walls and often contain valves to assist blood flow back to the heart.

Identify the correct statement: Based on the analysis, the correct statement is that arteries carry blood away from the heart. This aligns with the known function of arteries in the circulatory system.