Epinephrine
Introduction: Epinephrine is an agonist at both A and B receptors. It is, therefore a very important vaso – constrictor and cardiac stimulant. Epinephrine is synthesized from tyrosine in the adrenal medulla and released along small quantities of nor – epinephrine into the bloodstream. Low doses B effects (vasodilation) predominate while on higher doses a […]