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1. Introduction to Anatomy & Physiology5h 42m
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 Heart2h 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

Leukocytes

Anatomy & Physiology

17. The Blood

Leukocytes

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Multiple Choice

Diapedesis refers to __________.

the engulfing of foreign bodies by leukocytes

the type of movement erythrocytes use in the tissue spaces

the movement of leukocytes from blood vessels into tissue spaces

the chemical attraction leukocytes use to reach the site of tissue damage

the secretion of chemicals that trigger the inflammatory process

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Verified step by step guidance

Understand the term 'diapedesis': Diapedesis is a process involving leukocytes, which are white blood cells.

Identify the context of diapedesis: It specifically refers to the movement of leukocytes from the bloodstream into tissue spaces.

Clarify the mechanism: During diapedesis, leukocytes squeeze through the endothelial cells of blood vessel walls to reach sites of tissue damage or infection.

Differentiate from other processes: Diapedesis is not about engulfing foreign bodies (phagocytosis), nor is it related to erythrocyte movement or chemical attraction (chemotaxis).

Recognize its role in the immune response: Diapedesis is crucial for the immune system to respond to injury or infection by allowing leukocytes to access affected tissues.