After simulation of AC H receptors a muscle impulse spreads quickly along the and into the Muscle tissue along the tubules
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Motor neurons trigger action potentials in muscle cell membranes that open voltage-sensitive $\mathrm{Ca}^{2+}$ channels in $\mathrm{T}$ tubules, allowing extracellular $\mathrm{Ca}^{2+}$ to enter the cytosol, bind to troponin $C,$ and initiate rapid muscle contraction.
The action potential in the motor end plate rapidly spreads to the interior regions of a muscle cell by means of transverse tubules.
Adi S.
Place in chronological order the events that occur at a neuromuscular junction Triggers an electrical impulse along sarcolemma. Membrane permeability to sodium is increased (opening of sodium channels). Some vesicles release acetylcholine Acetylcholine diffuses across synaptic cleft. Acetylcholine binds to receptors on motor end plate Sodium enters muscle cell Nerve impulse arrives at distal end of motor neuron axon Reset
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