Regarding α and β receptors:
Select one or more:
A. Stimulation of α-2 receptors increases the noradrenergic activity.
B. Stimulation of α-1 receptors will cause vasodilatation.
C. The β-1 receptors are mainly located at the heart tissue
D. Phentolamine stimulates the α-1 receptors.
E. Phenoxybenzamine is a specific α-1 blocker.