PSYC62H3 Chapter Notes - Chapter 7: Fetus, Salbutamol, Nitrosamine
Document Summary
Chapter seven: tobacco: consists of leaves from plants in the genus nicotiana, forms: cigarettes, cigars, hookah, chew, snuff, dipping tobacco, dissolvable tobacco, usage of tobacco products dropped off around the 1960s and 70s, nicotine blo: Cigarette blood level rises and tappers off. Explains why it"s a useful approach to treating nicotine addiction that alleviates withdrawal symptoms. Chewing gum has a delayed rise but increases. Nicotine replacement products can become addictive themselves. Hookah: inhaled tobacco smoke first passes through a bowl of water. Pharmacokinetic properties and tobacco use: nicotine absorption (through lung and oral tissue) After absorption, nicotine distributes across most barriers including mammillary glands and the placenta. Given the large surface area of the lungs, smoked tobacco provides the most effective route of nicotine administration. The freebase form of nicotine best absorbs through mucous membranes in the mouth. Peak absorption for nicotine from cigarettes occurs after approximately 7 minutes.
