Part one of term paper
is generally defined as the use of a drug with such frequency that the user has physical or mental harm or it impairs social abilities. The substances that are discussed in this report are called psychoactive drugs; those drugs that influence or alter the workings of the mind, affect moods, emotions, feelings, and thinking processes. Drug D ...

Part two of term paper
... in order to keep using. Finally, the user has withdrawal symptoms when drug use is stopped. They may undergo physical pain or mental distress. The drug mimics a natural process in the brain called neurotransmission. This is when a brain cell releases a signal to another brain cell. The signal then returns to the first brain cell. The signal is called a neurotransmitter. One major neurotransmitter is called dopamine, which is involved in feelings of pleasure. When the drug is released int ...