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

17. The Blood

Introduction To Blood

Anatomy & Physiology

17. The Blood

Introduction To Blood

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Multiple Choice

Capillary blood is a mixture of which of the following?

Lymph and plasma

Only venous blood

Arterial and venous blood

Only arterial blood

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Verified step by step guidance

Understand the concept of capillary blood: Capillary blood is a mixture of blood from both arterial and venous sources. Capillaries are small blood vessels where the exchange of oxygen, nutrients, and waste products occurs between blood and tissues.

Review the anatomy of capillaries: Capillaries connect arterioles (small arteries) to venules (small veins). This anatomical connection allows capillary blood to contain components from both arterial and venous blood.

Differentiate arterial and venous blood: Arterial blood is oxygen-rich and flows from the heart to the tissues, while venous blood is oxygen-poor and carries waste products back to the heart. Capillary blood is a blend of these two types due to the exchange processes occurring in capillaries.

Eliminate incorrect options: Lymph and plasma are not components of capillary blood. Plasma is a part of blood, but lymph is a separate fluid found in the lymphatic system. Similarly, capillary blood is not exclusively venous or arterial; it is a mixture of both.

Conclude with the correct answer: Capillary blood is a mixture of arterial and venous blood, as it reflects the exchange of substances occurring in the capillaries between the two blood types.