What are the two main classes of adrenergic receptors for norepinephrine and epinephrine?
A)nicotinic and muscarinic
B)ACh and ATP
C)alpha and beta
D)epinephrine and norepinephrine
E)sodium and potassium

Question

What are the two main classes of adrenergic receptors for norepinephrine and epinephrine?
A)​nicotinic and muscarinic
B)ACh and ATP
C)alpha and beta
D)epinephrine and norepinephrine
E)​sodium and potassium

Quizplus · Accepted Answer

The two main classes of adrenergic receptors for norepinephrine and epinephrine are alpha and beta. Alpha receptors are further divided into alpha-1 and alpha-2, while beta receptors are divided into beta-1, beta-2, and beta-3. Activation of alpha receptors leads to vasoconstriction and increased heart rate, while activation of beta receptors leads to vasodilation and increased heart rate and contractility.

What Are the Two Main Classes of Adrenergic Receptors for Norepinephrine