Drugs and Alcohol Abuse
Opioids, cannabinoids, coca alkaloids, adolescent risk factors and prevention. (Biology › Human Health and Disease, NEET UG syllabus.)
What is Drugs and Alcohol Abuse?
A psychological attachment to certain effects, such as euphoria and a temporary feeling of well-being, associated with drug and alcohol abuse.
Key points
- Identify the major categories of commonly abused drugs (opioids, cannabinoids, coca alkaloids).
- State the plant sources and chemical forms of these drugs.
- Describe the primary mode of action and physiological effects of each drug category.
- Explain the factors contributing to drug and alcohol abuse, especially in adolescents.
Common exam trap
Confusing the source plants for different drug categories (e.g., opium poppy for cannabinoids).
Definitions
- Term
Addiction
- Meaning
A psychological attachment to certain effects, such as euphoria and a temporary feeling of well-being, associated with drug and alcohol abuse.
- Term
Dependence
- Meaning
The tendency of the body to manifest a characteristic and unpleasant withdrawal syndrome if regular dose of drugs/alcohol is abruptly discontinued.
- Term
Tolerance
- Meaning
A state where the body requires increasingly larger doses of a substance to achieve the same effect.
- Term
Opioids
- Meaning
A class of drugs derived from the opium poppy that bind to specific opioid receptors in the CNS and gastrointestinal tract, acting as depressants.
- Term
Cannabinoids
- Meaning
A group of chemicals derived from Cannabis sativa that interact with cannabinoid receptors, primarily in the brain, affecting perception and mood.
- Term
Coca Alkaloids
- Meaning
Potent stimulants derived from the coca plant, such as cocaine, which interfere with neurotransmitter transport, leading to euphoria and increased energy.
Learning objectives
Identify the major categories of commonly abused drugs (opioids, cannabinoids, coca alkaloids).
State the plant sources and chemical forms of these drugs.
Describe the primary mode of action and physiological effects of each drug category.
Explain the factors contributing to drug and alcohol abuse, especially in adolescents.
Outline effective strategies for the prevention and control of substance abuse.
Prerequisites
Basic understanding of the human nervous system (CNS, neurotransmitters).
Knowledge of basic human physiology and organ systems (respiratory, cardiovascular, digestive).
Common mistakes
Confusing the source plants for different drug categories (e.g., opium poppy for cannabinoids).
Misidentifying the primary effect of a drug (e.g., calling opioids stimulants).
Underestimating the severity of withdrawal symptoms or the importance of prevention.
Not knowing the chemical name of heroin (diacetylmorphine).
Keywords
Opioids
Cannabinoids
Coca Alkaloids
Papaver somniferum
Cannabis sativa
Erythroxylum coca
Heroin
Cocaine
Addiction
Dependence
Withdrawal
Adolescence
Prevention
Practice preview
Cocaine, a coca alkaloid, primarily interferes with the transport of which neurotransmitter?…
easy
Which plant is the source of the opioid drug morphine?…
easy
Cannabinoid receptors are primarily present in which part of the human body?…
easy