Thoracic Splanchnic Nerves
Get Thoracic Splanchnic Nerves essential facts below. View Videos or join the Thoracic Splanchnic Nerves discussion. Add Thoracic Splanchnic Nerves to your Like2do.com topic list for future reference or share this resource on social media.
Thoracic Splanchnic Nerves
Thoracic splanchnic nerves
Gray838.png
The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses. (Greater and lesser splanchnic nerves labeled at left.)
Gray847.png
Abdominal portion of the sympathetic trunk, with the celiac and hypogastric plexuses. (Greater splanchnic and lowest splanchnic labeled at upper left. Greater splanchnic and lesser splanchnic labeled at upper right.)
Details
From thoracic ganglia
Identifiers
MeSH D013153
Anatomical terms of neuroanatomy

Thoracic splanchnic nerves are splanchnic nerves that arise from the sympathetic trunk in the thorax and travel inferiorly to provide sympathetic innervation to the abdomen. The nerves contain preganglionic sympathetic and general visceral afferent fibers.

There are three main thoracic splanchnic nerves:

Name Ganglia Description
greater[1] T5-T9 or T5-T10[2] The nerve travels through the diaphragm and enters the abdominal cavity, where its fibers synapse at the celiac ganglia. The nerve contributes to the celiac plexus, a network of nerves located in the vicinity of where the celiac trunk branches from the abdominal aorta. The fibers in this nerve modulate the activity of the enteric nervous system of the foregut. They also provide the sympathetic innervation to the adrenal medulla, stimulating catecholamine release.
lesser[3] T9-T12, T9-T10,[3] T10-T12, or T10-T11[2] The nerve travels inferiorly, lateral to the greater splanchnic nerve. Its fibers synapse with their postganglionic counterparts in the superior mesenteric ganglia, or in the aorticorenal ganglion. The nerve modulates the activity of the enteric nervous system of the midgut.
least or lowest[4] T12-L2, or T11-T12 The nerve travels into the abdomen, where its fibers synapse in the renal ganglia.

The nerve's origins can be remembered by the "4-3-2 rule", accounting for the number of ganglia giving rise to each nerve. However, different sources define the nerves in different ways, so this rule may not always be reliable.

Additional images

References

External links


  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

Thoracic_splanchnic_nerves
 



 

Top US Cities