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

What is the primary function of myelin sheaths in the nervous system?

To provide nutrients to neurons

To generate electrical impulses

To insulate axons and increase the speed of nerve impulse conduction

To connect neurons to blood vessels

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Verified step by step guidance

Understand the structure of a neuron: Neurons are the basic units of the nervous system, consisting of a cell body, dendrites, and an axon.

Learn about the axon: The axon is a long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body.

Explore the role of myelin sheaths: Myelin sheaths are layers of fatty tissue that wrap around the axon, providing insulation.

Recognize the function of myelin sheaths: The primary function of myelin sheaths is to insulate axons, which helps increase the speed of nerve impulse conduction.

Understand the mechanism: Myelin sheaths facilitate faster transmission of electrical signals through a process called saltatory conduction, where impulses jump between nodes of Ranvier along the axon.