Divergence and conservation of the meiotic recombination machinery Biology Diagrams The sympathetic trunk is a fundamental part of the sympathetic nervous system, and part of the autonomic nervous system. It allows nerve fibres to travel to spinal nerves that are superior and inferior to the one in which they originated. Also, a number of nerves, such as most of the splanchnic nerves, arise directly from the trunks.
The sympathetic trunk is a paired structure of nerve fibers that runs along both sides of the vertebral column. It is a key part of the autonomic nervous system, specifically the sympathetic division, and extends from the base of the skull down to the coccyx. The trunk consists of a chain of interconnected sympathetic ganglia that are located lateral to the vertebral bodies.
Radiology Reference Article - Radiopaedia.org Biology Diagrams
The sympathetic ganglia, or paravertebral ganglia, are autonomic ganglia of the sympathetic nervous system.Ganglia are 20,000 to 30,000 afferent and efferent nerve cell bodies that run along on either side of the spinal cord.Afferent nerve cell bodies bring information from the body to the brain and spinal cord, while efferent nerve cell bodies bring information from the brain and spinal cord
The parasympathetic nervous system (PNS) is one of the two main divisions of the autonomic nervous system (ANS). It acts in conjunction with the sympathetic nervous system (SNS) to maintain homeostasis within the body. The collective action of the parasympathetic nervous system can be described as "rest and digest".It dominates during periods of quiet activity and helps to return the body
Sympathetic and Parasympathetic Biology Diagrams
The sympathetic nervous system is comprised exclusively of efferent neurons and divides into the left and right sympathetic chains.[1] Each sympathetic chain extends from the skull base to the coccyx paravertebrally, carrying preganglionic fibers from the spinal cord that synapse in an adjacent ganglion, from which ascending and descending postganglionic fibers head toward viscera.[2][3] The Sympathetic trunk (paravertebral ganglia) Prevertebral (splanchnic) ganglia The neuronal bodies of the sympathetic ganglia synapse with the white rami communicantes: The sympathetic and parasympathetic divisions of the nervous system work in very close association, with contrasting, yet tightly coordinated effects.
