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

12. The Central Nervous System

Introduction to the Central Nervous System

Anatomy & Physiology

12. The Central Nervous System

Introduction to the Central Nervous System

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Multiple Choice

What is the white matter of the spinal cord primarily composed of?

Neuron cell bodies

Myelinated axons

Dendrites

Unmyelinated axons

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Verified step by step guidance

Step 1: Understand the structure of the spinal cord. The spinal cord is divided into gray matter and white matter. Gray matter primarily contains neuron cell bodies, dendrites, and unmyelinated axons, while white matter is composed of myelinated axons.

Step 2: Recall the function of myelinated axons. Myelin is a fatty substance that insulates axons, allowing for faster transmission of electrical signals. This is a key characteristic of white matter in the spinal cord.

Step 3: Differentiate between the options provided. Neuron cell bodies, dendrites, and unmyelinated axons are components of gray matter, not white matter. Myelinated axons are the primary component of white matter.

Step 4: Relate the composition of white matter to its function. White matter facilitates communication between different parts of the central nervous system by transmitting signals efficiently through myelinated axons.

Step 5: Conclude that the correct answer is 'Myelinated axons,' as this is the primary component of the white matter in the spinal cord.