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

Myelinated fibers (tracts) form matter while unmyelinated fibers form matter.

white; gray

yellow; red

gray; white

red; yellow

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Verified step by step guidance

Step 1: Understand the structure of the nervous system. Myelinated fibers are axons covered by a fatty substance called myelin, which insulates the axon and speeds up the transmission of nerve impulses. Unmyelinated fibers lack this myelin sheath.

Step 2: Learn the distinction between white matter and gray matter. White matter primarily consists of myelinated axons, which give it a lighter appearance due to the presence of myelin. Gray matter, on the other hand, is composed of unmyelinated fibers, cell bodies, dendrites, and synapses, giving it a darker appearance.

Step 3: Relate the terms 'myelinated' and 'unmyelinated' to the corresponding types of matter. Myelinated fibers form white matter, while unmyelinated fibers form gray matter.

Step 4: Review the options provided in the question. The correct pairing is 'white; gray,' as it matches the anatomical and physiological characteristics of myelinated and unmyelinated fibers.

Step 5: Eliminate incorrect options such as 'yellow; red,' 'gray; white,' and 'red; yellow,' as they do not accurately describe the relationship between myelinated/unmyelinated fibers and white/gray matter.