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.
Answer this questWhen the motor neuron releases acetylcholine into  the neuromuscular junction, the acetylcholine binds to receptors in  the muscle fiber that allows positiv â¦ ely charged ions to enter the  muscle fiber, which results in the muscle fiber contracting.lthough the receptor binds to â¦ a signal molecule outside the cell, the entire receptor changes shape-even the part inside the cell. As a result, it causes molecules inside the cell to respond. These molecules, in turn, start a compllicated chain of events inside the cell that tells the cell what to do.