( 3 ) influences of the receptor blockers injected into rostral ventrolateral medulla ( rvl ) on the depressor and bradycardia responses of glu-injection into a5 were slightly different from those of the same receptor blockers administered into rvl : phentolamine , propranolol , naloxone and bicuculline all markedly reduced the depressor and bradycardia effects of a5-excitation ( propranolol and bicuculline even reversed these effects ) .
C0428977
bradycardia
C0033497
propranolol