Have you ever wondered why people act the way they do when they are under the influence of a drug? How does the use of drugs change the function of the brain? This interesting topic will be explored in this paper in the context of heroin. Heroin is a drug that consists of two acetyl groups and morphine. The presence of the two acetyl groups on the morphine creates a speedway to the brain for heroin, because of the ability for acetyl to increase lipid solubility, and thus making it much simpler for quick access to the brain. The morphine, as it enters the brain, bind to opioid receptors, which are commonly associated with feelings of pleasure and reward. It is important to note that these receptors are located on the brain stem, which is vital
