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Nicotine and cigarette smoking |
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Written by Administrator
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Monday, 14 September 2009 |
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Cigarette smoking is directly linked to nicotine ... If we started from smoking tobaccos, perfume, which are very popular for example Egypt, it is likely that we will not ever addicted from smoking, because they do not contain nicotine.
Nicotine - a pyridine alkaloid contained in tobacco leaves. Trace amounts of nicotine are also in tomatoes, peppers. Effects on the body. Nicotine is a very strong toxin acting on the nervous system, and shall apply such in mixtures with other compounds as an insecticide. LD50 is about 50 mg. In low doses (1-3mg) has a stimulant, which is the main reason that cigarette smoking is fun. Nicotine acts on the human body in many ways, it binds to and blocks the action of permanently dozen different types of enzymes. In small doses it acts fertilizer causing increased secretion of adrenaline, which causes all the associated symptoms (loss of pain and hunger, rapid heartbeat, dilated pupils, etc.). In larger doses, causes permanent blockage of the nervous system, because it involves so-called permanent. nicotinic receptors in nerve cells disrupting their metabolism. Nicotine acts anticoagulation. When cigarette smoke is nicotine works almost immediately after ingestion (about 7 seconds), but remains in the body for a long time (half-life is 72 hours). All this makes it highly addictive substance. Physically addictive nicotine. Although the dose of absorption when smoking is minimal, as most present in cigarettes, nicotine is burned, are sufficient for rapid addiction. Nicotine also acts on the amount of dopamine in the brain. This is another reason why nicotine is addictive. People smoke to maintain a high level of dopamine in the brain. Studies also have shown that nicotine is a weak inhibitor of MAO. An interesting fact is that most (75-90%) people with schizophrenia smoke cigarettes. Probably this is due to speculation about her subconscious healing properties. |
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Last Updated ( Monday, 14 September 2009 )
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