Biology 2217B Study Guide - Final Guide: Stevia Rebaudiana, Arecaceae, Sorbus
21 Apr 2016
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Mode of activity: ingestion by various routes of administration, absorption into bloodstream, circulation, activity. Use of mind altering drugs is ancient. Modern western culture dissociates drug use from formal cultural or religious customs. > alkaloid made in roots and transported to leaves. > n. rustica and n. tabacum (major species) Large plantations in maryland, virginia and carolinas. Slaves were used to watch over and harvest the crop. Plant seedlings that were grown in a greenhouse -> inflorescence removed to promote leaf expansion -> hung in high temperatures to cure. Chlorophyll denatures leaving a brown leaf -> aged months to years -> blended and flavored for taste and brand recognition. Passes through the blood-brain-barrier faster than heroin or caffeine. Causes release of small amounts of dopamine. In 1602, there was a person warning others of the health hazards of smoking. Since 1963, 12 million americans have died as a result of smoking. Second hand smoke is just as dangerous.
