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 statement accurately describes blood vessels?

All blood vessels have valves to prevent backflow of blood.

Arteries carry blood away from the heart, while veins carry blood towards the heart.

Veins have thicker walls than arteries to withstand higher pressure.

Capillaries are the largest blood vessels in the body.

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Verified step by step guidance

Understand the basic function of blood vessels: Arteries, veins, and capillaries are the three main types of blood vessels, each with distinct roles in the circulatory system.

Identify the function of arteries: Arteries are responsible for carrying oxygenated blood away from the heart to the rest of the body. They have thick, elastic walls to handle high pressure from the heart's pumping action.

Identify the function of veins: Veins carry deoxygenated blood back towards the heart. They have thinner walls compared to arteries and often contain valves to prevent the backflow of blood, especially in the limbs.

Identify the function of capillaries: Capillaries are the smallest blood vessels and are the site of exchange of gases, nutrients, and waste between blood and tissues. They connect the arterial and venous systems.

Evaluate the statements: Based on the functions and characteristics of these blood vessels, determine which statement accurately describes them. Arteries carry blood away from the heart, while veins carry blood towards the heart, is the correct description.