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 inhibitions, followed by a downer…

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…

What is Dehydration? Causes, Treatment

Dehydration is a serious and potentially life-threatening condition that is caused by the lack of water needed for the body to function well. If not treated, dehydration can cause high body temperature, sleepiness, visual snow, dizziness, unconsciousness, hypotension (decreased blood pressure), headaches, nausea, paresthesia (limbs tingling), shriveled and wrinkled skin, dim vision, incapability to urinate,…