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

21. The Immune System

Cells of the Immune System: Granulocytes

Anatomy & Physiology

21. The Immune System

Cells of the Immune System: Granulocytes

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Multiple Choice

Which cells help destroy pathogens and damaged tissue in the brain?

Oligodendrocytes

Astrocytes

Ependymal cells

Microglia

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Verified step by step guidance

Begin by understanding the role of each cell type listed in the options. Oligodendrocytes are responsible for forming the myelin sheath around neurons in the central nervous system, which helps in the conduction of nerve impulses.

Next, consider astrocytes. These cells provide structural support, regulate ion balance, and contribute to the blood-brain barrier, but they are not primarily involved in destroying pathogens.

Ependymal cells line the ventricles of the brain and are involved in the production and circulation of cerebrospinal fluid, not in immune defense.

Microglia are the resident immune cells of the central nervous system. They act as macrophages, engulfing and destroying pathogens and damaged tissue, thus playing a crucial role in the brain's immune response.

Conclude by recognizing that microglia are the correct answer because they are specifically adapted to identify and eliminate harmful agents and debris in the brain, maintaining neural health.