The cystic plexus is the derivation of the
hepatic plexus, which is the largest offshoot from the
celiac plexus.
Formed by branches from the celiac plexus, the right and left vagi and the right
phrenic nerve
The phrenic nerve is a mixed motor/sensory nerve which originates from the C3-C5 spinal nerves in the neck. The nerve is important for breathing because it provides exclusive motor control of the diaphragm, the primary muscle of respiration. In ...
,
parasympathetic nerves are motor to the musculature of the
gall bladder and
bile ducts, but inhibitory to the
sphincters
A sphincter is a circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning. Sphincters are found in many animals. There are over 60 types in the hum ...
. Sympathetic nerves derived from thoracic seven to nine segments are vasomotor and motor to sphincters.
It supplies the gall bladder,
common hepatic duct,
cystic duct and upper part of the bile duct. The lower part of the bile duct is supplied by the
nerve plexus around the
superior pancreaticoduodenal artery.
References
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Nerve plexus