Article last reviewed: 2018 | St. Rosemary Institution © 2010-2019 | Creative Commons 4.0

Drugs: Types & Effects

Class Typical Effects Overdose Effects         Depressants   Alcohol Increases the activity of gamma-aminobutyric acid (GABA) By increasing an inhibitory neurotransmitter, alcohol dampens down neural firing Also decreases the activity of glutamate, a major excitatory neurotransmitter Person literally becomes less inhibited and feels euphoric An initial upper phase from the release of…

Descent with Modification: A Darwinian View of Life

Darwin’s Five Observations More young are produced than survive Individuals vary in their characteristics Some characteristics are better than others These characteristics are inheritable Long periods of time are available Darwin’s Two Major Points Many species of organisms presently inhabiting the earth are descendants from ancestral species that were different from modern species The mechanism…