U.S. Government. U.S. History. Spring 2014 Final Exam Study Guide & Info Your final exam in this class is on Thursday, May 29th @ 8:00 AM (normal class time - 1st Period) I realize this is early, but I will be out of ... Posted May 6, 2014, 8:00 AM by Jamie Martin.
Neuromuscular Junction Skeletal muscle cells contract as a result of impulses from motor neurons. The place where a motor neuron stimulates a muscle cell is called a neuromuscular junction. In order for skeletal muscle cells to contract each cell must be stimulated by a process of a motor neuron.Sliding Filament Theory The theory of how muscle contracts is the sliding filament theory.The contraction of a muscle occurs as the thin filament slide past the thick filaments.n skeletal muscle, the cells never contract individually. Rather they contract as groups of muscle cells that are collectively connected to a motor nerve originating in the spinal cord. The combination of the motor nerve cell (neuron) and the muscle cells it innervates is known as the motor unit.
One motor neuron (nerve cell) may stimulate a few muscle cells or hundreds of them, depending on the. particular muscle and the work it does. One neuron and all the skeletal muscle cells it stimulates are a. motor unit. When a long threadlike extension of the neuron, called the nerve fiber or axon, reaches the. muscle, it branches into a number of axon terminals, each of which forms junctions with the. sarcolemma of a different muscle cell. These junctions are called neuromuscular (literally, ânerve-. muscleâ) junctions.