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

The motor unit consists of muscle fibers and a:

neuroglial cell

sensory neuron

capillary

motor neuron

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Verified step by step guidance

Understand the concept of a motor unit: A motor unit is the functional unit of the neuromuscular system, consisting of a motor neuron and all the muscle fibers it innervates. This allows for coordinated muscle contraction.

Review the role of a motor neuron: A motor neuron is a type of nerve cell that transmits signals from the central nervous system to skeletal muscles, initiating muscle contraction.

Eliminate incorrect options: Neuroglial cells provide support and protection for neurons but are not involved in forming motor units. Sensory neurons transmit sensory information to the central nervous system and are not part of motor units. Capillaries are small blood vessels that supply oxygen and nutrients to tissues but are not directly involved in the motor unit.

Identify the correct answer: The motor neuron is the component that, along with muscle fibers, forms the motor unit.

Conclude: The motor unit consists of muscle fibers and a motor neuron, which work together to produce muscle contractions in response to neural signals.