ESIM - Evaporative System Integrity Monitor, All Acronyms, viewed April 16, 2017, <https://www.allacronyms.com/ESIM/Evaporative_System_Integrity_Monitor>.
Acetylcholine is the neurotransmitter used at the neuromuscular junction âin other words, it is the chemical that motor neurons of the nervous system release in order to activate muscles.
Acetylcholine binds to receptors on the post-synaptic membrane and causes depolarization of the muscle fiber, which leads to its contraction. Typically, one action potential in the neuron releases enough neurotransmitter to cause one contraction in the muscle fiber. In muscle cells, the sarcolemma or plasma membrane extends transversely into the sarcoplasm to surround each myofibril, establishing the T-tubule system.