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 correctly describes the connective tissue layer that surrounds an individual axon within a nerve?

Endoneurium

Myelin sheath

Epineurium

Perineurium

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Verified step by step guidance

Understand the structure of a nerve: A nerve is composed of multiple axons bundled together, and these axons are surrounded by different layers of connective tissue for protection and organization.

Learn the hierarchy of connective tissue layers: The three main layers are the epineurium (outermost layer surrounding the entire nerve), perineurium (middle layer surrounding bundles of axons called fascicles), and endoneurium (innermost layer surrounding individual axons).

Clarify the role of the endoneurium: The endoneurium is a delicate connective tissue layer that directly surrounds each individual axon within a nerve, providing support and insulation.

Differentiate the myelin sheath: The myelin sheath is not a connective tissue layer but rather a fatty substance produced by Schwann cells (in the peripheral nervous system) or oligodendrocytes (in the central nervous system) that insulates axons to enhance signal transmission.

Compare the options: Based on the definitions, the correct answer is 'Endoneurium,' as it specifically describes the connective tissue layer surrounding an individual axon within a nerve.