Chapter 7, Problem 26RA

Summary Introduction

To review:

Inhibition caused by muscarinic ACh receptors in the heart and GABA receptors in neurons.

Introduction:

Muscarinic ACh receptors are found in cardiac muscles and have an inhibitory regulatory role in the cardiovascular system. They belong to the G family of receptors whose function is regulated by Guanosine mono or triphosphate. GABA (gamma–amino-butyric acid) receptors are found in the neurons of the CNS (central nervous system) and the brain. They are ligand-gated receptors. In the CNS, they have important inhibitory roles in sensory and motor transmissions.