An action potential is produced in the postsynaptic membrane of the neuromuscular junction in the following ways:
Action potentials go through the sacrolemma and T tubules when sodium diffuses into the postsynaptic membrane. The sarcoplasmic reticulum releases calcium as a result of the action potential in the T tubules, which subsequently binds to troponin and instructs it to migrate in order to reveal the myosin head attachment sites. The myosin heads then connect as Atp degrades into adp. Myosin heads then flex, forcing the actin and myosin filaments to move past one another, shortening the sarcomeres and causing the muscle to contract.
what is an action potential?
An action potential is a recognizable pattern of rapid voltage or membrane potential rise and fall across a cellular membrane. A cell membrane must be sufficiently depolarized to initiate a voltage response; otherwise, an action potential won't fire. Neurons and muscle cells are two types of cells that communicate via action potentials.
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