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

4. Tissues & Histology

Introduction to Nervous Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Nervous Tissue

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Multiple Choice

Which of the following is a function of astrocytes in the nervous system?

Generating myelin sheaths

Forming the blood-brain barrier

Transmitting electrical impulses

Producing cerebrospinal fluid

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Verified step by step guidance

Understand the role of astrocytes: Astrocytes are a type of glial cell found in the central nervous system. They have several important functions that support neurons and maintain the environment of the brain.

Identify the functions of astrocytes: Astrocytes are involved in maintaining the blood-brain barrier, regulating blood flow, providing nutrients to nervous tissue, and maintaining extracellular ion balance.

Differentiate astrocytes from other glial cells: Unlike oligodendrocytes, which generate myelin sheaths, astrocytes do not produce myelin. They also do not transmit electrical impulses like neurons.

Recognize the blood-brain barrier function: Astrocytes contribute to the formation and maintenance of the blood-brain barrier, which protects the brain from harmful substances in the bloodstream while allowing essential nutrients to pass through.

Conclude the correct function: Based on the functions of astrocytes, forming the blood-brain barrier is a key role they play in the nervous system, distinguishing them from other cells that have different functions.