epinephrine and norepinephrine secreted by adrenal medulla and released as neurotransmitter by postsynaptic sympathetic neurons -- associated with sympathetic activity
drug that has the effects of epinephrine relating to epinephrine (its release or action)
Pertaining to nerves that release the neurotransmitter norepinephrine/noradrenaline (e g adrenergic nerves, adrenergic response) An alternative U S useage also pertains to the receptors acted upon by noradrenaline, i e adrenergic receptors The IUPHAR approved nomenclature for these receptors is 'adrenoceptor' www adrenoceptor com!