the results suggest that a1 exerts its cardiovascular effects mainly via rvl , and the alpha- , beta- and gaba-receptors within rvl ( but not opiate receptors ) mediate the hypotension effect of a1 area , while gaba-receptors play an important role in mediating the bradycardia effect of the a1 area .
C0007226
cardiovascular
C0428977
bradycardia