The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the motor unit sarcomere neuromuscular junction
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The neuromuscular junction is a specialized synapse where the motor neuron communicates with the skeletal muscle fibers. It plays a key role in muscle contraction as the release of neurotransmitters, primarily acetylcholine, from the axon terminal leads to depolarization of the muscle cell's sarcolemma, initiating a cascade that results in muscle contraction. In real-world terms, understanding the neuromuscular junction is crucial for medical professionals, especially those in fields like physical therapy and neurology. Conditions like myasthenia gravis can affect this junction, leading to muscle weakness. Knowing how it works helps in devising treatment plans and rehabilitation strategies for affected patients.