For Biology students in the College of Creative Studies at the University of California Santa Barbara.
Thursday, May 27, 2010
Nicotine mode of action
By binding to nicotinic acetylcholine receptors, nicotine increases the levels of several neurotransmitters - acting as a sort of "volume control". It is thought that increased levels of dopamine in the reward circuits of the brain are responsible for the euphoria and relaxation and eventual addiction caused by nicotine consumption.