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

The adhesion of a leukocyte to the wall of a blood vessel is called what?

Diapedesis

Margination

Chemotaxis

Phagocytosis

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Verified step by step guidance

Begin by understanding the context of the problem: leukocytes, or white blood cells, play a crucial role in the immune response. They travel through the bloodstream to reach sites of infection or injury.

Identify the key terms provided in the options: Diapedesis, Margination, Chemotaxis, and Phagocytosis. Each term describes a different process involving leukocytes.

Margination refers to the process where leukocytes adhere to the endothelial lining of blood vessels. This is the initial step in leukocyte extravasation, where they move out of the bloodstream towards the site of tissue damage or infection.

Diapedesis is the process by which leukocytes move through the endothelial cells of blood vessels into the surrounding tissue. It follows margination.

Chemotaxis is the movement of leukocytes towards the site of infection in response to chemical signals, while Phagocytosis is the process of engulfing and digesting pathogens. These processes occur after margination and diapedesis.