summary of Celiac plexus : easy and simple way

Celiac plexus :

It is the largest  autonomic nerve plexus  of posterior abdominal wall which unites with celiac ganglion 

Why  coeliac plexus is also  known as solar plexus ? 

because of its sun ray like  radiating nerve fibers

location of celiac trunk 

at the level of T 12 and L 1 verterbra

It surrounds the coeliac artery & root of superior mesenteric artery  

 

•       Celiac plexus present in front of the crus of the diaphragm

 

•       Celiac  plexus is situated posterior to stomach & lesser sac

•       It lies medial to supra renal gland & above the upper border of the pancreas  

 

Formation of celiac plexus:  Celiac plexus is formed by two celiac ganglions and nerve fibres

•       Celiac ganglion : 

  it has a larger upper part  and smaller lower part also known as aorticorenal ganglion  

•       Nerve fibres of the celiac plexus : 3 types of nerve fibres  present in the celiac plexus

1. Sympathetic fibre
2. Parasympathetic fibre :
3. General visceral afferent fibre
   

Sympathetic fibre

•       Greater splanchnic nerves joins the upper part of the celiac ganglion  (it contain 

preganglionic sympathetic fibres which synpse with celiac ganglion)

•       lesser splanchnic nerves joins the aorticorenal ganglion  ( it is also  Preganglionic 

sympathetic fibres which synapse with aorticorenal ganglion )

•       after synapsing Postganglionic sympathetic fibres leave coeliac & aorticorenal ganglion  

 

 

 

 

•       Parasympathetic fibre : Preganglionic  vagal fibres 

•       General visceral afferent fibre :

•       Sensory phrenic fibres reach the plexus along the inferior phrenic artery

 

•       Primary sensory sympathetic afferent fibers (red) shown in relation to posterior horn tract cells (green) conveying visceral information to the thalamus and to general visceral efferent neurons (blue).

•       Visceral afferents in the coeliac plexus convey pain and sensation from upper abdomenal viscera

•       Clinical anatomy : celiac plexus block

•       This method might be done (often bilaterally) for pain relief in situations regarding cancer of the stomach or pancreas .

Branches of celiac plexus
Number of secondary plexus arises from the celiac plexus

 

Hepatic plexus

Left gastric plexus

Splenic plexus

Suprarenal plexus

Renal plexus

Testicular plexus

Ovarian plexus

Superior mesenteric plexus

Summary of nerves of celiac plexus

1. Preganglionic and postganglionic sympathetic fibres
2. Preganglionic parasympathetic (vagus nerve ) fibres
3. General visceral afferent fibres 

 
Youtube video: https://youtu.be/0vXM7pcsd8M