Prevertebral Plexus

	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 vessels. There are five spinal nerve plex ... which branches from a prevertebral ganglion. References External links * http://www.dartmouth.edu/~humananatomy/part_5/chapter_30.html Nerve plexus {{Portal bar, Anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Sympathetic Trunk The sympathetic trunks (sympathetic chain, gangliated cord) are a paired bundle of nerve fibers that run from the base of the skull to the coccyx. They are a major component of the sympathetic nervous system. Structure The sympathetic trunk lies just lateral to the vertebral bodies for the entire length of the vertebral column. It interacts with the anterior rami of spinal nerves by way of rami communicantes. The sympathetic trunk permits preganglionic fibers of the sympathetic nervous system to ascend to spinal levels superior to T1 and descend to spinal levels inferior to L2/3.Greenstein B., Greenstein A. (2002): Color atlas of neuroscience – Neuroanatomy and neurophysiology. Thieme, Stuttgart – New York, . The superior end of it is continued upward through the carotid canal into the skull, and forms a plexus on the internal carotid artery; the inferior part travels in front of the coccyx, where it converges with the other trunk at a structure known as the ganglion impa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Celiac Plexus The celiac plexus, also known as the solar plexus because of its radiating nerve fibers, is a complex network of nerves located in the abdomen, near where the celiac trunk, superior mesenteric artery, and renal arteries branch from the abdominal aorta. It is behind the stomach and the omental bursa, and in front of the crura of the diaphragm, on the level of the first lumbar vertebra. The plexus is formed in part by the greater and lesser splanchnic nerves of both sides, and fibers from the anterior and posterior vagal trunks. The celiac plexus proper consists of the celiac ganglia with a network of interconnecting fibers. The aorticorenal ganglia are often considered to be part of the celiac ganglia, and thus, part of the plexus. Structure The celiac plexus includes a number of smaller plexuses: Other plexuses that are derived from the celiac plexus: Terminology The celiac plexus is often popularly referred to as the solar plexus. In the context of sparring or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Superior Hypogastric Plexus The superior hypogastric plexus (in older texts, hypogastric plexus or presacral nerve) is a plexus of nerves situated on the vertebral bodies anterior to the bifurcation of the abdominal aorta. Structure From the plexus, sympathetic fibers are carried into the pelvis as two main trunks- the right and left hypogastric nerves- each lying medial to the internal iliac artery and its branches. The right and left hypogastric nerves continues as Inferior hypogastric plexus; these hypogastric nerves send sympathetic fibers to the ovarian and ureteric plexuses, which originate within the renal and abdominal aortic sympathetic plexuses. The superior hypogastric plexus receives contributions from the two lower lumbar splanchnic nerves (L3-L4), which are branches of the chain ganglia. They also contain parasympathetic fibers which arise from pelvic splanchnic nerve (S2-S4) and ascend from Inferior hypogastric plexus; it is more usual for these parasympathetic fibers to ascend to the left-han ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	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 vessels. There are five spinal nerve plexuses, except in the thoracic region, as well as other forms of autonomic plexuses, many of which are a part of the enteric nervous system. The nerves that arise from the plexuses have both sensory and motor functions. These functions include muscle contraction, the maintenance of body coordination and control, and the reaction to sensations such as heat, cold, pain, and pressure. There are several plexuses in the body, including: Spinal Plexuses Cervical plexus - serves the head, neck and shoulders Brachial plexus - serves the chest, shoulders, arms and hands * Lumbosacral plexus * Lumbar plexus - serves the back, abdomen, groin, thighs, knees, and calves Subsartorial plexus - below the sartorius muscle of thigh * Sacral ple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Prevertebral Ganglion 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 are those of the autonomic nervous system. 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 syna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]