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 Heart2h 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

9. Muscle Tissue

Steps of Muscle Contraction

Anatomy & Physiology

9. Muscle Tissue

Steps of Muscle Contraction

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Multiple Choice

A motor neuron along with all the muscle fibers it supplies is called a(n) __________.

synaptic cleft

axon terminal

motor unit

motor end plate

neuromuscular junction

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Verified step by step guidance

Begin by understanding the components involved in muscle contraction. A motor neuron is a nerve cell that transmits signals from the brain or spinal cord to muscles, causing them to contract.

Recognize that a motor neuron connects to multiple muscle fibers, forming a functional unit responsible for muscle contraction.

Identify the term that describes this combination of a motor neuron and the muscle fibers it innervates. This is known as a 'motor unit'.

Differentiate between related terms: 'synaptic cleft' is the gap between neurons, 'axon terminal' is the end of a neuron, 'motor end plate' is the region of the muscle fiber membrane, and 'neuromuscular junction' is the site where a motor neuron communicates with a muscle fiber.

Conclude that the correct term for a motor neuron and all the muscle fibers it supplies is 'motor unit', which is essential for understanding how muscles are controlled and coordinated.