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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

The myelin sheath is composed mostly of which of the following?

Proteins

Lipids

Carbohydrates

Nucleic acids

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Verified step by step guidance

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

Recognize the composition of the myelin sheath: It is primarily made up of lipids, which are fatty substances that provide insulation.

Consider the role of lipids: Lipids in the myelin sheath help to increase the speed of nerve impulse conduction by allowing electrical signals to jump between nodes of Ranvier.

Differentiate between the options: Proteins, carbohydrates, and nucleic acids are also important biological molecules, but they do not primarily compose the myelin sheath.

Conclude that lipids are the main component of the myelin sheath, which is crucial for its insulating properties and function in the nervous system.