Answer:
1.The DRE categorization process is premised on these long-standing, medically accepted facts. DREs classify drugs in one of seven categories: central nervous system (CNS) depressants, CNS stimulants, hallucinogens, dissociative anesthetics, narcotic analgesics, inhalants, and cannabis.
2.
A. The gateway drug effect is a comprehensive catchphrase for the often observed effect that the use of a psychoactive drug is coupled to an increased probability of the use of further drugs.
B. Depressants are drugs that tend to slow the central nervous system and slow brain activity by affecting the neurons.
C. Stimulants, sometimes called “uppers,” temporarily increase alertness and energy. The most commonly used street drugs that fall into this category are cocaine and amphetamines.
D. The term narcotic originally referred medically to any psychoactive compound with numbing or paralysing properties
E. Hallucinogens are a diverse group of drugs that alter a person’s awareness of their surroundings as well as their own thoughts and feelings.
F. Although other substances that are misused can be inhaled, the term inhalants refers to the various substances that people typically take only by inhaling.
3. The main categories are:
stimulants (e.g. cocaine)
depressants (e.g. alcohol)
opium-related painkillers (e.g. heroin)
hallucinogens (e.g. LSD)
4. Classifying drugs by chemical similarities is useful because drugs that are chemically similar often have similar impacts and risks. An individual who is addicted to a drug is also more likely to abuse and become addicted to another drug if it is chemically similar
5.
