PSY 312 Quiz: Chapter 15 Outline
6 Mar 2017
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Chapter 15: drug addiction and the brain"s reward circuits. Drug administration and absorption: usually administered 1 of 4 ways, through the mucous membranes of the nose, mouth, or rectum. The route of administration influences the rate at which the drug reaches its sites of action in the body: oral: this is the preferred route of administration for many drugs. After the drug is swallowed it dissolves in the fluids of the stomach and it is carried to the intestine, where they are absorbed into the bloodstream. On the other hand, some drugs pass through the stomach wall (e. g. alcohol) and these take effect sooner because they do not have to reach the intestine to be absorbed. Two advantages of the oral route are: ease and safety. The big disadvantage is its unpredictability: injection: this type of injection is common in medical practices.
