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 type of glial cell produces the myelin sheath in the peripheral nervous system (PNS)?

Schwann cells

Microglia

Oligodendrocytes

Astrocytes

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Verified step by step guidance

Understand the role of the myelin sheath: The myelin sheath is a protective covering that surrounds axons in the nervous system, facilitating the rapid transmission of electrical signals.

Differentiate between the central and peripheral nervous systems: The central nervous system (CNS) includes the brain and spinal cord, while the peripheral nervous system (PNS) consists of nerves outside the CNS.

Identify the glial cells involved in myelination: In the CNS, oligodendrocytes are responsible for producing the myelin sheath. In the PNS, Schwann cells perform this function.

Review the function of Schwann cells: Schwann cells wrap around axons in the PNS, creating the myelin sheath that insulates and increases the speed of nerve impulse conduction.

Eliminate incorrect options: Microglia are involved in immune defense in the CNS, oligodendrocytes myelinate axons in the CNS, and astrocytes support neurons and maintain the blood-brain barrier in the CNS. Therefore, Schwann cells are the correct answer for the PNS.