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

1. Introduction to Anatomy & Physiology

What is Anatomy & Physiology?

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

What is Anatomy & Physiology?

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Multiple Choice

The nerve fiber innervates the muscle fiber at the:

myofibril

sarcomere

synaptic vesicle

neuromuscular junction

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Verified step by step guidance

Understand the anatomy of a muscle fiber and its interaction with nerve fibers. Muscle fibers are composed of smaller units like myofibrils and sarcomeres, but these are structural components, not sites of nerve interaction.

Learn the role of the neuromuscular junction. This is the specialized synapse where the motor neuron communicates with the muscle fiber to initiate contraction.

Recognize the components of the neuromuscular junction. It includes the axon terminal of the motor neuron, the synaptic cleft, and the motor end plate of the muscle fiber.

Understand the function of synaptic vesicles. These vesicles in the axon terminal release neurotransmitters (e.g., acetylcholine) into the synaptic cleft, which bind to receptors on the motor end plate to trigger muscle contraction.

Conclude that the nerve fiber innervates the muscle fiber at the neuromuscular junction, as this is the site of communication between the nervous system and the muscular system.