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 connective tissue layer surrounds individual axons within a peripheral nerve?

Perineurium

Myelin sheath

Endoneurium

Epineurium

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Verified step by step guidance

Step 1: Understand the structure of a peripheral nerve. Peripheral nerves are composed of bundles of axons, which are surrounded by connective tissue layers for protection and support.

Step 2: Learn the hierarchy of connective tissue layers in a peripheral nerve. The three main layers are: Epineurium (outermost layer surrounding the entire nerve), Perineurium (middle layer surrounding fascicles or bundles of axons), and Endoneurium (innermost layer surrounding individual axons).

Step 3: Clarify the role of the Endoneurium. The Endoneurium is a delicate connective tissue layer that directly surrounds and protects individual axons within a nerve. It also contains capillaries to supply nutrients to the axons.

Step 4: Differentiate the Endoneurium from other structures. The Myelin sheath is not a connective tissue layer but rather a fatty substance produced by Schwann cells that insulates axons to enhance signal transmission.

Step 5: Conclude that the correct connective tissue layer surrounding individual axons within a peripheral nerve is the Endoneurium, based on its anatomical location and function.