What Is the Importance Of The α and β Receptors

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.