KIN 155 Lecture Notes - Lecture 1: Sliding Filament Theory, Motor Unit, Extraocular Muscles
23 Mar 2016
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Action potential is all or nothing so it"s all the same. Depends on action potential and will look the same. If you want to modulate the information then could inhibit in post synaptic membrane. other axon terminals. Each motoneuron synapses to more than one muscle cell. But a muscle cell is innervated by only one mn. Motor unit the motoneuron and all the muscle cells it connects to. Number of muscle cells in a motor unit is referred to as the innveration ratio. Lower innervation ratio relates to increased precision of control. Properties of muscle cells are the same for all muscle cells of a single motor unit. As a result motor units are often classified by the contractile properties. Includes a single motoneuron and all the muscle cells that it innervates (synapses onto) Muscle fibers slide along each other in the presence of calcium. Mn action potential releases neurotransmitter (acetylcholine ach)
