| left inferior pulmonary vein | <anatomy, vein> The vein returning oxygenated blood from the inferior lobe of the left lung to the left atrium. Synonym: vena pulmonalis inferior sinistra. (05 Mar 2000) |
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| left pulmonary artery | <anatomy, artery> The shorter of the two terminal branches of the pulmonary trunk, it pierces the pericardium to enter the hilum of the left lung. Its branches accompany the segmental and subsegmental bronchi. Branches to the superior lobe (rami lobi superioris ) are apical (ramus apicalis ), anterior ascending (ramus anterior ascendens ), anterior descending (ramus anterior descendens ), posterior (ramus posterior ), and lingular (ramus lingularis ), the last having inferior and superior branches (rami lingulares inferior et superior ). Branches to the inferior lobe (rami lobi inferioris ) are the superior branch of the inferior lobe (ramus superior lobi inferior ) and the medial (medialis), anterior, lateral (lateralis) and posterior basal branches (rami basalis ). Synonym: arteria pulmonalis sinistra. (05 Mar 2000) |
| left superior pulmonary vein | The vein returning oxygenated blood from the left superior lobe of the lung to the left atrium. Synonym: vena pulmonalis superior sinistra. (05 Mar 2000) |
| abdominal aortic plexus | <anatomy, neurology> An autonomic plexus surrounding the abdominal aorta, directly continuous with the thoracic aortic plexus above and continued inferior to the bifurcation of the aorta as the superior hypogastric plexus. Synonym: plexus aorticus abdominalis. (05 Mar 2000) |
| acromial plexus | A vascular network between the acromion and the skin of the shoulder, formed by anastomoses of the acromial branch of the suprascapular artery with the acromial branch of the thoracoacromial artery. Synonym: rete acromiale, acromial plexus. (05 Mar 2000) |
| annular plexus | A nerve plexus near the corneoscleral junction from which myelinated and unmyelinated nerves pass to the cornea. Synonym: plexus annularis. (05 Mar 2000) |
| anterior coronary plexus | The part of the cardiac plexus that accompanies the coronary arteries on the anterior aspect of the heart. (05 Mar 2000) |
| aortic lymphatic plexus | A plexus of lymph nodes and connecting vessels lying along the lower portion of the abdominal aorta. Synonym: plexus aorticus. (05 Mar 2000) |
| ascending pharyngeal plexus | An autonomic plexus on the artery of the same name, formed of fibres from the superior cervical ganglion. Synonym: plexus pharyngeus ascendens. (05 Mar 2000) |
| Auerbach's plexus | One of two ganglionated neural networks which together form the enteric nervous system. The myenteric (auerbach's) plexus is located between the longitudinal and circular muscle layers of the gut. Its neurons project to the circular muscle, to other myenteric ganglia, to submucosal ganglia, or directly to the epithelium, and play an important role in regulating and patterning gut motility. (12 Dec 1998) |
| axillary plexus | A lymphatic plexus formed of the lymph nodes, with their afferent and efferent vessels, in the axilla. Synonym: plexus axillaris. (05 Mar 2000) |
| basilar plexus | A venous plexus on the clivus, connected with the cavernous and petrosal sinuses and the internal vertebral (epidural) venous plexus. Synonym: plexus basilaris, basilar sinus. (05 Mar 2000) |
| Batson's plexus | Any of four interconnected venous networks surrounding the vertebral column; anterior external vertebral venous plexus, the small system around the vertebral bodies; posterior external vertebral venous plexus, the extensive system around the vertebral processes; anterior internal vertebral venous plexus, the system running the length of the vertebral canal anterior to the dura; posterior internal vertebral venous plexus, the system running the length of the vertebral canal posterior to the dura; the latter two constitute the epidural venous plexus. Synonym: plexus venosus vertebralis, Batson's plexus, vertebral venous plexus. (05 Mar 2000) |
| batson venous plexus | <radiology> Paravertebral venous plexus, can carry tumour emboli directly to brain from pelvis or abdomen (12 Dec 1998) |
| brachial plexus | A network of lower cervical and upper dorsal spinal nerves supplying the arm, forearm and hand. (27 Sep 1997) |