| A | B |
|---|
| oral administration | Drugs entering the body through the mouth. |
| inhalation | Drugs entering the body through air sacs in the lungs. |
| transdermal | Drugs entering the body through the surface of the skin. |
| Blood Brain Barrier | Protective filter at the base of the brain. |
| Dose-Response Relationship | The correlation of intensity of drug actions and amount of the drug. |
| brain stem | A part of the brain that regulates involuntary bodily functions such as respiration. |
| hypothalamus | A part of the brain that is an emotion and behavior regulator. |
| cerebal cortex | A part of the brain that regulates higher brain functioning such as reasoning. |
| dopamine | A neurotransmitter who's production increases with the use of stimulant drugs, leading to euphoric highs. |
| physical tolerance | An adaptation of the Central Nervous System leading to withdrawal symptoms when the drug is not taken or taken in smaller amounts. |
