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

Leukocytes

Anatomy & Physiology

17. The Blood

Leukocytes

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Multiple Choice

Leukocytes can undergo diapedesis. What is diapedesis?

The production of leukocytes in the bone marrow.

The process of leukocytes engulfing and digesting pathogens.

The release of leukocytes from the spleen into the bloodstream.

The process by which leukocytes move through the walls of blood vessels into surrounding tissues.

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Verified step by step guidance

Understand the term 'diapedesis': It refers to the movement of leukocytes (white blood cells) from the bloodstream through the walls of blood vessels into the surrounding tissues.

Recognize that diapedesis is a crucial part of the immune response, allowing leukocytes to reach sites of infection or injury.

Differentiate diapedesis from other processes involving leukocytes, such as their production in the bone marrow (hematopoiesis) or their ability to engulf pathogens (phagocytosis).

Note that diapedesis involves the leukocytes squeezing through the endothelial cells of the blood vessel walls, a process facilitated by signaling molecules and changes in the cytoskeleton of the leukocytes.

Remember that diapedesis is not related to the release of leukocytes from the spleen, but rather their movement from the bloodstream into tissues where they can perform immune functions.