the adrenoceptors involved in the increase in diastolic pressure and heart rate elicited by i.v . administration of pilocarpine to the pithed rat were assessed using as pharmacological tools the alpha 1-adrenoceptor antagonist prazosin , the alpha 2-adrenoceptor antagonist rauwolscine , the beta 1-adrenoceptor blocker atenolol and the beta 2-adrenoceptor blocker ici 118,551 .
C0034783
adrenoceptors
C0001643
beta 2-adrenoceptor