Final answer:
Acetylcholinesterase plays a crucial role in terminating signal transmission between nerve cells by breaking down acetylcholine. Without acetylcholinesterase, ACh would remain bound to receptors, causing continuous muscle contractions and spasms. Certain nerve gases like Sarin inhibit acetylcholinesterase, leading to muscle paralysis.
Step-by-step explanation:
In the body, acetylcholinesterase (AChE) plays a crucial role in terminating the signal transmission between nerve cells. AChE breaks down acetylcholine (ACh) into choline and acetate, preventing ACh from continuously binding to ACh receptors and causing prolonged muscle contraction. Without any acetylcholinesterase in the body, the individual's neurons would not be able to receive input properly, as the ACh would remain bound to the receptors. This could lead to continuous muscle contractions and spasms. For example, certain nerve gases like Sarin irreversibly inhibit AChE, leading to an excess accumulation of ACh and causing overstimulation of muscles, leading to paralysis.