Professor Ammon is giving a class demonstration about how muscle fibers have receptors for ______ that open _____ channels.
A) acetylcholine (ACh); sodium
B) ACh; potassium
C) glutamate; sodium
D) glutamate; potassium

Question

Quizplus · Accepted Answer

Muscle fibers have receptors for acetylcholine (ACh) that open sodium channels, which leads to depolarization of the membrane and ultimately muscle contraction. Glutamate does not play a role in muscle fiber contraction. Potassium channels are involved in repolarization of the membrane after depolarization.

Professor Ammon Is Giving a Class Demonstration About How Muscle