What is the action of the binding of muscarine to its receptors in the digestive system?
A)alpha subunits bind to K+ channels,close them,leading to depolarization.
B)alpha subunits bind to K+ channels,open them,leading to hyperpolarization.
C)beta-gamma subunits bind to K+ channels,close them,leading to depolarization.
D)beta-gamma subunits bind to K+ channels,open them,leading to hyperpolarization.

Question

Quizplus · Accepted Answer

Muscarine is a direct agonist of muscarinic acetylcholine receptors in the digestive system. Activation of these receptors leads to the binding of alpha subunits to K+ channels, closing them, and leading to depolarization of the cell membrane. This depolarization can result in muscle contraction, gland secretion, and other digestive functions.

What Is the Action of the Binding of Muscarine to Its