Friday, January 28, 2011
Stimulants And Acetylcholine
The substances referred to as stimulants are a variety of compounds that excite the central nervous system or alter the body's metabolic activity. Some stimulants enhance alertness and increase energy whereas others affect emotions and oppose psychological depression. One way in which chemical stimulants function is to mimic or enhance the effects of hormones that prepare animals for "fight or flight" when they are faced with threatening situations. They bring about an increased heart
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