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 Muscle Tissue

Anatomy & Physiology

4. Tissues & Histology

Introduction to Muscle Tissue

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Multiple Choice

How many somatic motor neurons typically stimulate a single skeletal muscle fiber?

One

None

Several

Two

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Verified step by step guidance

Understand the anatomy of a skeletal muscle fiber: Skeletal muscle fibers are the individual cells that make up skeletal muscles. They are controlled by somatic motor neurons, which transmit signals from the central nervous system to initiate muscle contraction.

Learn about the neuromuscular junction: Each skeletal muscle fiber is connected to a somatic motor neuron at a specialized site called the neuromuscular junction. This is where the neuron releases neurotransmitters (like acetylcholine) to stimulate the muscle fiber.

Recognize the concept of motor unit: A motor unit consists of a single somatic motor neuron and all the skeletal muscle fibers it innervates. However, each individual muscle fiber is typically stimulated by only one somatic motor neuron.

Clarify the relationship: While a single somatic motor neuron can stimulate multiple muscle fibers, each muscle fiber is generally innervated by only one somatic motor neuron. This ensures precise control of muscle contraction.

Review the options provided: Based on the anatomy and physiology of skeletal muscle fibers, the correct answer is 'One,' as each muscle fiber is typically stimulated by a single somatic motor neuron.