PSYC 2050 Study Guide - Quiz Guide: Dichloromethane, Xanthine, Theophylline

• School: GSU
• Department: Psychology
• Course: PSYC 2050
• Professor: Christopher Thomas Goode

Document Summary

Chapter 11: caffeine: know the three xanthines present in coffee, tea and cocoa: caffeine, theophylline and theobromine. Caffeine is the xanthine found in coffee. Caffeine content depends on the preparation of the coffee. Although tea contains another chemical that derived its name from the tea plant, theophylline (cid:894)(cid:862)di(cid:448)i(cid:374)e leaf(cid:863)(cid:895) is prese(cid:374)t o(cid:374)ly i(cid:374) (cid:448)ery s(cid:373)all, (cid:374)o(cid:374)phar(cid:373)a(cid:272)ologi(cid:272)al a(cid:373)ou(cid:374)ts i(cid:374) the (cid:271)e(cid:448)erage. Theophylline is very effective at relaxing the bronchial passages and is prescribed for use by asthmatics. The unique xanthine in chocolate is theobromine. Its physiological actions closely parallel those of caffeine, but it is much less potent in its effects on the central nervous system: explain the common mechanism of action of the xanthines found in coffee, tea and cocoa. In the early 1980s, evidence was presented that caffeine and the other xanthines block the (cid:271)rai(cid:374)"s re(cid:272)eptors for a su(cid:271)sta(cid:374)(cid:272)e k(cid:374)o(cid:449)(cid:374) as ade(cid:374)osi(cid:374)e, (cid:449)hi(cid:272)h is a (cid:374)eurotra(cid:374)s(cid:373)itter or neuromodulator.