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Drugs 33.4 (Sara O. - Meshael - Reema - Maisa) (Examples: (Caffeine (Soft…
Drugs 33.4
(Sara O. - Meshael - Reema - Maisa)
Examples:
Nicotine
Cigarettes
Caffeine
Soft drinks
Coffee
Effects:
increases the amount of dopamine released into a synapse.
constricts blood vessels, raising blood pressure and causing the heart to work harder than normal.
makes users feel awake and alert
temporarily raises epinephrine (adrenaline) levels in the body
Mode of Action:
Nicotine:
increase the amount of dopamine
constricts blood vessles
raising blood pressure
heart working harder.
Caffeine:
works by binding to adenosine receptors on
neurons in the brain.
Adenosine slows down neural activity, causing drowsiness.
When caffeine binds to these receptors, it has the opposite effect.
It makes users feel awake and alert
Nicotine
Caffeine
