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Encyclopedia > Sympathetic efferent fibers

In the autonomic nervous system, fibers from the CNS to the ganglion are known as preganglionic fibers. This article or section is in need of attention from an expert on the subject. ... A diagram showing the CNS: 1. ... Template:Game Autonomic nervous system innervation, showing the sympathetic and parasympathetic (craniosacral) systems, in red and blue, respectively Autonomic ganglia are clusters of neuronal cell bodies and their dendrites and are essentially a junction between autonomic nerves originating from the central nervous system and autonomic nerves innervating their target organs...


All preganglionic fibers, whether they are in the sympathetic division or in the parasympathetic division, are cholinergic (that is, these fibers uses acetylcholine as their neurotransmitter). Grays FIG. 838– The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses. ... It has been suggested that Parasympatholytic be merged into this article or section. ... A synapse is cholinergic if it uses acetylcholine as its neurotransmitter. ... The chemical compound acetylcholine, often abbreviated as ACh, was the first neurotransmitter to be identified. ... Neurotransmitters are chemicals that are used to relay, amplify and modulate electrical signals between a neuron and another cell. ...


Sympathetic preganglionic fibers tend to be shorter than parasympathetic preganglionic fibers because sympathetic ganglia are often closer to the spinal cord than are the parasympathetic ganglia.


See also

External links

  • Diagram at tmc.edu
  • Diagram at bham.ac.uk
  • Diagram at uwaterloo.ca
Autonomic nervous system

preganglionic fibers - postganglionic fibers This article or section is in need of attention from an expert on the subject. ...


sympathetic nervous system: sympathetic trunks (white ramus communicans, gray ramus communicans) - collateral ganglia
cavernous plexus - cervical ganglia: (superior, middle, inferior) - splanchnic nerves: (thoracic, lumbar, sacral) - ganglion impar Grays FIG. 838– The right sympathetic chain and its connections with the thoracic, abdominal, and pelvic plexuses. ... The sympathetic trunks (sympathetic chain, paravertebral ganglia, gangliated cord) extend from the base of the skull to the coccyx. ... Collateral Ganglia lie between the sympathetic chain and the organ of supply. ... The superior cervical ganglion, the largest of the cervical ganglia, is placed opposite the second and third cervical vertebræ. It is of a reddish-gray color, and usually fusiform in shape; sometimes broad and flattened, and occasionally constricted at intervals; it is believed to be formed by the coalescence of...


internal carotid - cardiac


celiac: celiac ganglia - aorticorenal - renal - spermatic/ovarian - superior mesenteric - aortic plexus - inferior mesenteric - hepatic - splenic - gastric - pancreatic - suprarenal The solar plexus, also known as the celiac plexus or plexus cœliacus, is an autonomous cluster of nerve cells (see Plexus) in the human body behind the stomach and below the diaphragm near the celiac artery in the abdominal cavity. ... The superior gastric plexus (gastric or coronary plexus) accompanies the left gastric artery along the lesser curvature of the stomach, and joins with branches from the left vagus. ...


hypogastric: superior hypogastric - inferior hypogastric - vesical - prostatic - uterovaginal


parasympathetic nervous system: ciliary ganglion (short ciliary nerves) - pterygopalatine ganglion (nerve of pterygoid canal) - submandibular ganglion - otic ganglion - pelvic splanchnic It has been suggested that Parasympatholytic be merged into this article or section. ... The ciliary ganglion is small parasympathetic ganglion lying in the orbit between the optic nerve and the lateral rectus muscle that is associated with the nasociliary nerve (a branch of the ophthalmic division of the trigeminal nerve). ... The branches of the ciliary ganglion are the short ciliary nerves. ... The sphenopalatine ganglion is a parasympathetic ganglion found in the spheno-maxillary fossa. ... The nerve of the pterygoid canal (Vidian nerve), formed by the junction of the great petrosal nerve and the deep petrosal nerve in the cartilaginous substance which fills the foramen lacerum, passes forward, through the pterygoid canal, with the corresponding artery, and is joined by a small ascending sphenoidal branch... The submandibular ganglion (or submaxillary ganglion in older texts) is of small size and is fusiform in shape. ... The Otic Ganglion is a parasympathetic ganglion located immediately below the foramen ovale. ...


 
 

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