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 of the following is NOT considered part of the formed elements of blood?

Platelets

White blood cells

Plasma

Red blood cells

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Verified step by step guidance

Step 1: Begin by understanding the term 'formed elements of blood.' Formed elements refer to the cellular components of blood, which include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). These are distinct from the liquid portion of blood.

Step 2: Recognize that plasma is the liquid component of blood. It is primarily composed of water, proteins, electrolytes, nutrients, and waste products. Plasma serves as the medium in which the formed elements are suspended, but it is not considered a formed element itself.

Step 3: Compare the options provided in the question: Platelets, white blood cells, and red blood cells are all cellular components and are classified as formed elements. Plasma, on the other hand, is not cellular and is therefore not part of the formed elements.

Step 4: Understand the distinction between plasma and formed elements. Plasma makes up about 55% of blood volume, while formed elements constitute the remaining 45%. This distinction is crucial for understanding blood composition.

Step 5: Conclude that the correct answer is 'Plasma,' as it is not considered part of the formed elements of blood. The other options (platelets, white blood cells, and red blood cells) are all part of the formed elements.