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

Nervous Tissue: The Neuron

Anatomy & Physiology

4. Tissues & Histology

Nervous Tissue: The Neuron

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Multiple Choice

One purpose of the ________ is to speed up the neural message traveling down the axon.

myelin sheath

axon hillock

nucleus

dendrite

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Verified step by step guidance

Step 1: Begin by understanding the structure and function of a neuron. A neuron is composed of several parts, including the axon, dendrites, nucleus, and myelin sheath. Each part plays a specific role in transmitting neural signals.

Step 2: Focus on the axon, which is the long, slender projection of the neuron that carries electrical impulses away from the cell body toward other neurons, muscles, or glands.

Step 3: Learn about the myelin sheath, which is a fatty layer that wraps around the axon. Its primary function is to insulate the axon and increase the speed of electrical signal transmission through a process called saltatory conduction.

Step 4: Compare the functions of the other options provided: the axon hillock is the region where the action potential is initiated, the nucleus contains the genetic material of the neuron, and dendrites receive signals from other neurons. None of these directly speed up the neural message traveling down the axon.

Step 5: Conclude that the correct answer is the myelin sheath, as it is specifically designed to enhance the speed of neural signal transmission along the axon.