The definition of naturalism is a view, particularly a philosophical and artistic one, that bases everything on what can be seen, what is viewed as natural and what is viewed as Earthly. An example of naturalism is an atheistic viewpoint. naturalism.
is caffeine a vasoconstrictor or a vasodilator? Answers: vasoconstrictor. vasoconstritor and a diuretic. Caffeine is also a known competitive inhibitor of the enzyme cAMP-phosphodiesterase (cAMP-PDE), which converts cyclic AMP (cAMP) in cells to its noncyclic form, allowing cAMP to build up in cells.
Tea and Coffee Provide a Different âBuzzâ. The other day I was talking to a friend of mine about the psychoactive effects of coffee and tea. Both contain caffeine and therefore have a stimulant-like effect on the brain, but we agreed that the nature of these effects is quite different.