Drug A attaches to the acetylcholine receptors on the smooth muscle without stimulating them and prevents acetylcholine from gaining access to them.
Terminal nerve fibers release acetylcholine into the neuromuscular junction, which then binds to acetylcholine receptors on muscle cells.
antagonist at acetylcholine receptors which dilated their pupils.
These may come from new approaches such as the role of sigma, NMDA and acetylcholine receptors.
"The Importance of Nicotinic Acetylcholine Receptors in Schizophrenia, Bipolar Disorder, and Tourette's Syndrome."