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STIMULENTS -
It makes a person more wakeful, alert and active.
(i) Caffeine ( C8H10N4O2) -
It is 1,3,7-trimethylxanthine obtained from tea leaves (Thea sinesis) dried beans of coffee plant (Coffea arabica) & dried seeds of cacao plant (Theobroma cacoa).
It is white, crystalline, bitter alkaloid.
(ii) Cocaine (C17H21NO4) -
It is benzoylmethylecgonine, extracted from dried leaves & young twigs of the South American shrub Erythraxylon coca.
It is taken for excitement.
(iii) Crack -
It is highly potent smokable derivative of cocaine.
May cause complications such as heart and nasopharynx damage.
Crack is sold as ridged lengths called teeth or french fries.
Describe the filaments in the muscle fiber A healthy skeletal muscle fiber is isolated and has no external forces on it. It has normal intracellular levels of ATP and is bathed
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