Time and consistency of consumption, the effects of mixing this with other medication, the possible side affects of the medication.
Answer:D. they are all small molecules
Explanation:Tight cell-wall junctions and a layer of cells around the blood vessels keep large or electrically charged molecules from entering the brain. However, small neutral molecules like those of cocaine and MA easily pass through the blood-brain barrier and enter the brain. Once inside the brain, substances of abuse begin to exert their psychoactive effects.
A person suffers leg burns from spilled charcoal lighter fluid. A family member extinguishes the flames. While waiting for an ambulance, what should the burned person do?
Have someone assist him into a bath of cool water, where he can wait for emergency personnel.
