Prevertebral ganglia (or collateral ganglia, or preaortic ganglia) lie between the
sympathetic ganglia and the target organ.
Function
Similar to the
paravertebral ganglia, the prevertebral ganglia are the nodules where
preganglionic neurons synapse with their
postganglionic counterparts. The nerves that synapse in the prevertebral ganglia innervate the pelvic viscera. Some of the targets present in the pelvic viscera include the
enteric nervous system, as well as the renal system, bladder, and any other organs present in the abdomen.
Physiology
Nerves arising from the
lateral horn of the
spinal cord
The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column (backbone). The backbone encloses the central canal of the sp ...
are those of the
autonomic nervous system
The autonomic nervous system (ANS), formerly referred to as the vegetative nervous system, is a division of the peripheral nervous system that supplies internal organs, smooth muscle and glands. The autonomic nervous system is a control system t ...
. They exit through the ventral root of the spinal cord, and continue through the ventral rami. At that point, they sharply branch to go through the
white ramus communicans of the paravertebral body. Unlike the thoracic and cutaneous nerves, the ANS nerves destined for the pelvic viscera continue through the paravertebral ganglia without synapsing. Instead of synapsing, they continue through splanchnic nerves until they reach a prevertebral ganglia (located proximally to their target organ). Once inside the prevertebral ganglia, the individual neurons comprising the nerve synapse with their postganglionic neuron. The postganglionic nerve then proceeds to innervate their targets (pelvic visceral organs).
Examples
These include
1. the
celiac ganglia (which can include the
aorticorenal ganglion),
2.
superior mesenteric ganglia, and
3.
inferior mesenteric ganglia
Inferior may refer to:
* Inferiority complex
* An anatomical term of location
* Inferior angle of the scapula, in the human skeleton
* ''Inferior'' (book), by Angela Saini
* '' The Inferior'', a 2007 novel by Peadar Ó Guilín
See also
*Junior ( ...
.
See also
*
Autonomic ganglion
An autonomic ganglion is a cluster of nerve cell bodies (a ganglion) in the autonomic nervous system. The two types are the sympathetic ganglion and the parasympathetic ganglion
Parasympathetic ganglia are the autonomic ganglia of the parasympa ...
*
Prevertebral plexus
A prevertebral plexus is a nerve plexus
A nerve plexus is a plexus (branching network) of intersecting nerves. A nerve plexus is composed of afferent and efferent fibers that arise from the merging of the anterior rami of spinal nerves and blood ...
*
Dogiel cells
Additional images
File:Gray839.png, Sympathetic (red) and parasympathetic (blue) nervous system
References
External links
*
{{Autonomic
Sympathetic nervous system