5:25 - psychoactive drugs Flashcards
substance use disorder
continued substance craving and use despite significant life disruption and risk
psychoactive drugs
a chemical substance that alters perceptions and moods
tolerance
the diminishing effect with regular use of the same dose of a drug, requiring the user to take larger doses before experiencing the drugs’ effect
what affects a drug’s overall effect?
biological effects of the drug, as well as the user’s expectations
neuroadaptation
adapting to the effects of a drug and building tolerance
addiction
compulsive craving of drugs or certain behaviors despite its adverse consequences
withdrawl
the discomfort and distress that follow discontinuing an addictive drug or behavior
depressants
drugs that reduce neural activity and slow body functions. (eg. alchohol, barbituates, and opiates)
alcohol use disorder
(alcoholism). alcohol use marked by tolerance, withdrawl, and a drive to continue problematic use
barbituates
(tranquilizers). depress nervous system activity. some types are prescribed to reduce anxiety and induce sleep. in larger does, memory and judgement is impaired.
sleeping pills + alcohol =
the total depressive effect on body functions can be lethal
opiates
- opium and its derivatives — heroin, codeine, and morphine
- depress neural functioning
- pupils constrict, breathing slows, and lethargy (sleepiness/lack of enthusiasm) sets in as bilssful pleasure replaces pain and anxiety
- when repeadetly flooded with opiates, the brain stops producing endorphins
stimulant
- excites neural activity and speeds up bodily functions.
- pupils dilate, heart and breathing rates increase, and blood sugar levels rise, causing a drop in appetite.
- energy and self-confidence rise
- include nicotine, caffeine, and amphetamines: cocaine, meth, and Ecstasy
- use to feel alert, lose weight, or boost mood or athletic performance
nicotine
- found in cigarettes and other tobacco products
- often as powerful and additctive as heroin and coke
- withdrawl symptoms include insomnia, anxiety, irritability, and distractibility
cocaine
- snorted, injected, or smoked into the bloodstream
- produces a rush of euphoria that depletes the brain’s supply of dopamine, seretonin, and norepinephrine