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 a Node of Ranvier in the context of nervous tissue?

A synapse between two neurons in the peripheral nervous system.

A type of glial cell that produces myelin in the central nervous system.

A gap in the myelin sheath of a nerve, between adjacent Schwann cells.

A neurotransmitter involved in the transmission of nerve impulses.

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Verified step by step guidance

Begin by understanding the structure of a neuron, which includes the cell body, dendrites, and axon. The axon is often covered by a myelin sheath, which is crucial for efficient nerve impulse transmission.

Recognize that the myelin sheath is not continuous along the axon. It is interrupted at regular intervals by gaps known as Nodes of Ranvier.

Learn that Nodes of Ranvier are essential for the process of saltatory conduction, where nerve impulses jump from one node to the next, speeding up the transmission along the axon.

Identify the role of Schwann cells in the peripheral nervous system, which produce the myelin sheath surrounding the axon, leaving gaps that form the Nodes of Ranvier.

Understand that Nodes of Ranvier are not synapses, glial cells, or neurotransmitters, but rather structural features of the axon that facilitate rapid nerve impulse conduction.