A) blocking the acetylcholine receptor sites
B) inhibiting the release of acetylcholine
C) inhibiting acetylcholinesterase
D) enchancing the release of acetylcholine.
Correct Answer: C
Solution :
: Nerve gas was found when scientists were looking for an insecticide (bug killer) to keep insects from killing crops. There are several kinds of nerve gas, but they all cause the same signs and symptoms. Nerve gas is a colourless spray or liquid. It works by shutting off a normal nerve job. Nerve gas is intended for military use. Nerve gases were first developed by Germany during World War II but were not used at that time. These gases generally cause death by asphyxiation, often preceded by such symptoms as blurred vision, excessive salivation, and convulsions. Physiologically, the toxic effect of nerve gases arises because they inactivate the enzyme cholinesterase, which normally controls the transmission of nerve impulses; the impulses continue without control, causing breakdown of respiration and other body functions. Atropine is an effective antidote against most nerve gases. Examples of nerve gases are - tabun, sarin, soman and VX.
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