Related Experiment Video
Updated: Oct 12, 2026

A Method of Nodose Ganglia Injection in Sprague-Dawley Rat
Published on: November 25, 2014
Effect of splanchnic nerve stimulation on epinephrine and norepinephrine release from gastrointestinal sympathetic
1Department of Physiology, Nagasaki University School of Medicine, Japan.
Abstract:
Gastrointestinal vascular perfusates in bullfrogs before and after splanchnic nerve stimulation were collected and analyzed for epinephrine and norepinephrine. Catecholamine in the perfusate before stimulation was predominantly epinephrine. Upon stimulation a marked increase in epinephrine release without any significant change in norepinephrine release was observed in experiments at 8-10 degrees C as well as 16-21 degrees C, showing that in frogs epinephrine is the sympathetic neurotransmitter and that the release of epinephrine is not affected by low temperatures.
Related Concept Videos
Sympathetic Pathways: Collateral Ganglia and Adrenal Medulla
Collateral Ganglia
Sympathetic preganglionic axons reach the collateral ganglia along the route of splanchnic nerves. These nerves bypass the sympathetic trunk and communicate with sympathetic postganglionic neurons housed in the prevertebral ganglia. These ganglia supply the organs of the abdominopelvic cavity.
The greater splanchnic nerve, formed by the...
Sympathetic Signaling
Sympathetic preganglionic fibers release the neurotransmitter acetylcholine (ACh) onto the ganglionic neurons in the...
Sympathetic Activation
Parasympathetic Division of the ANS
Parasympathetic Signaling
The effects of...
Enteric Nervous System: Regulation of GI Motor Activity
During periods of fasting, the ENS initiates the migrating myoelectric complex, a program...

