Thoracic Aortic Plexus

	Thoracic Aortic Plexus The thoracic aortic plexus is a sympathetic plexus in the region of the thoracic aorta The descending thoracic aorta is a part of the aorta located in the thorax. It is a continuation of the aortic arch. It is located within the posterior mediastinal cavity, but frequently bulges into the left pleural cavity. The descending thoracic .... References External links * Nerve plexus Nerves of the torso {{Neuroanatomy-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Thoracic Aorta The descending thoracic aorta is a part of the aorta located in the thorax. It is a continuation of the aortic arch. It is located within the posterior mediastinal cavity, but frequently bulges into the left pleural cavity. The descending thoracic aorta begins at the lower border of the fourth thoracic vertebra and ends in front of the lower border of the twelfth thoracic vertebra, at the aortic hiatus in the diaphragm where it becomes the abdominal aorta. At its commencement, it is situated on the left of the vertebral column; it approaches the median line as it descends; and, at its termination, lies directly in front of the column. The descending thoracic aorta has a curved shape that faces forward, and has small branches. It has a radius of approximately 1.16 cm. Structure The descending thoracic aorta is part of the aorta, which has different parts named according to their structure or location. The descending thoracic aorta is a continuation of the descending aorta ... [...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 plex ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]