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Nerve Agents are also known as nerve gases. They disrupt the mechanism by which nerves transfer messages to the organs.

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More specifically, nerve agents interfere with the transmission of messages along nerves, interfering with the chemical interactions that pass a message from one end of a nerve cell to the next nerve cell. They disrupt the electro-chemical processes at the synapses (junctions between nerve cells) by blocking acetylcholinesterase, a key enzyme.

By inhibiting nerve message passing, they prevent key messages from being sent to various critical body functions. As such, they cause involuntary muscle spasms in increasing intensity, and eventually lead to fatal asphyxia as the loss of respiratory control progresses.

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