important neurotransmitter

Cigarettes And Their Destruction Of The Brain :: essays research papers fc
Cigarettes and Their Destruction of the Brain Smokers generally have to a greater ex ecstasyt comfortable after that especially importantfirst cigarette of the day. Within just a few seconds of “lighting up,” smokingactivates mind-altering changes. Smokers are well aware of the long-term risksof their economic consumption such as lung cancer, heart disease, emphysema, and other deadlyillnesses. However, smokers are attracted by the immediate effects of smoking”a stimulant that makes them seem to feel more alert, clearheaded and able tofocus on work.” Smoking however, does not really have these effects what thesmoker perceives is an illusion. Nicotine begins to act on brain cells withinten seconds of inhalation, fitting into “keyholes” on the surface of the brainthe same “keyholes” as acetylcholine(an important neurotransmitter), andmimicking epinephrine and norepinephrine, giving the smoker a rush, orstimulation. Within 30 m inutes, smokers feel their energy begin to decline, asthe ingested nicotine is reduced. This process continues, as the smokersattention becomes increasingly focused on cigarettes. Nicotine causes smokersbrain cells to grow more nicotinic receptors than normal therefore, the brain may function normally despite the irregular amount of acetylcholine-likechemical acting upon it. The brain is reshaped the smoker feels normal withnicotine in his system, and abnormal without it. A series of tests wereconducted on nonsmokers, “active” smokers, and “deprived” smokers. The “active”smokers were given a cigarette before each test, while the “deprived” smokerswere not allowed cigarettes before tes