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

Which component of blood accounts for the largest proportion of blood volume?

Red blood cells

White blood cells

Plasma

Platelets

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Verified step by step guidance

Step 1: Begin by understanding the composition of blood. Blood is made up of four main components: plasma, red blood cells, white blood cells, and platelets.

Step 2: Learn the proportions of these components. Plasma accounts for approximately 55% of blood volume, while red blood cells make up about 45%. White blood cells and platelets together constitute less than 1%.

Step 3: Define plasma. Plasma is the liquid portion of blood, consisting mostly of water (about 90%), along with proteins, electrolytes, nutrients, hormones, and waste products.

Step 4: Compare the proportions of plasma to the other components. Since plasma makes up the largest percentage of blood volume, it is the correct answer.

Step 5: Reinforce the concept by noting that plasma serves as the medium for transporting nutrients, hormones, and waste products, making it a vital component of blood.