15. Adrenal medulla and parasympathetic responses

The adrenal medulla is a _.

modified sympathetic ganglion

What happens when preganglionic sympathetic ACh activates nicotinic receptors on chromaffin cells?

epinephrin is released into the bloodsteam and causes widespread effects

A sympathetic agonist mimics _ and dilates the pupil by activating _; a parasympathetic antagonist _ at _ and also promotes _.

norepinephrine, radial muscle, blocks acetylcholine, circular muscle, dilation

Atropine is a _. In the Thai cave rescue example, it was used with ketamine to _ during transport of anesthetized divers

muscarinic antagonist, educe salivation and help prevent aspiration

A sympathetic agonist mimics _; a sympathetic antagonist _. A parasympathetic agonist mimics _; a parasympathetic antagonist _.

norepinephrine, blocks its effect, acetylcholine, blocks its effect