CAMTASIA: Enteric Nervous System

Question 1

What two layers of muscle are responsible for motility of structures through the GI lumen

Answer 1

Longitudinal, circular

Question 2

As parasympathetic nerves innervate the plexi of the enteric NS, they will release ____ onto ____ of the postganglionic fibers. The postganglionic fibers in this instance are actually part of the ____ NS and will release ____ onto ____ of the target tissues.

Answer 2

ACh, nicotinic receptors, enteric, ACh, muscarinic receptors

Question 3

As sympathetic nerves innervate the plexi of the enteric NS and tissue, they will release ____ onto ____ of the postganglionic fibers and target tissues.

Answer 3

NE, alpha/beta receptors

Question 4

Short loop is where nervous signals are controlled ____ and between afferent signals from the lumen directly to the ____

Answer 4

Locally, plexi of the enteric NS

Question 5

Long loop is where nervous signals are sent all the way to the ____

Answer 5

Brain