Which of the following adrenergic neurotransmitter receptors plays the major role in heart activity?
A) beta 1
B) beta 2
C) beta 3
D) alpha 1

Question

Quizplus · Accepted Answer

Beta 1 adrenergic receptors are the main adrenergic receptors in the heart and are responsible for increasing heart rate and contractility. Activation of beta 1 receptors by adrenaline or noradrenaline leads to an increase in heart rate, faster conduction of electrical impulses, and stronger contractions of the heart muscles.

Which of the Following Adrenergic Neurotransmitter Receptors Plays the Major