| plexus venosus suboccipitalis | The extensive plexus of veins in the suboccipital region. Synonym: plexus venosus suboccipitalis. (05 Mar 2000) |
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| plexus venosus uterinus | The plexiform veins that lie along the sides of the uterus in the broad ligament. Synonym: plexus venosus uterinus. (05 Mar 2000) |
| plexus venosus vaginalis | The plexus of veins that surrounds the vagina. Synonym: plexus venosus vaginalis. (05 Mar 2000) |
| plexus venosus vertebralis | 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) |
| plexus venosus vesicalis | A plexus of veins around the fundus and sides of the bladder. Synonym: plexus venosus vesicalis, venous plexus of bladder. (05 Mar 2000) |
| pulsus venosus | A pulsation occurring in the veins, especially the internal jugular vein. Synonym: pulsus venosus. (05 Mar 2000) |
| sinus venosus | A cavity at the caudal end of the embryonic cardiac tube in which the veins from the intra-and extraembryonic circulatory arcs unite; in the course of development it forms the portion of the right atrium known in adult anatomy as the sinus of the vena cava. Synonym: saccus reuniens. Sinus venosus sclerae, the vascular structure encircling the anterior chamber of the eye and through which the aqueous is returned to the blood circulation. Synonym: circular sinus, Fontana's canal, Lauth's canal, Schlemm's canal, sinus circularis, venous sinus of sclera. (05 Mar 2000) |
| sinus venosus syndrome | <syndrome> The association of partial anomalous, pulmonary-venous connection, and a small venosus ASD. (05 Mar 2000) |
| nevus venosus | A nevus formed of a patch of dilated venules. (05 Mar 2000) |
| ductus venosus | In the foetus, continuation of the left umbilical vein through the liver to the vena cava inferior; after birth, its lumen becomes obliterated, forming the ligamentum venosum. Ductus venosus arantii, rarely used term for ductus venosus. (05 Mar 2000) |
| fossa of ductus venosus | A wide groove located posteriorly on the undersurface of the foetal liver between the caudate and left lobes; it lodges the ductus venosus and becomes the fissure of the ligamentum venosum in the adult. Synonym: fossa ductus venosi. (05 Mar 2000) |
| arcus | Synonym: arch. Origin: L. A bow (05 Mar 2000) |
| arcus adiposus | An opaque, grayish ring at the periphery of the cornea just within the sclerocorneal junction, of frequent occurrence in the aged; it results from a deposit of fatty granules in, or hyaline degeneration of, the lamellae and cells of the cornea. Synonym: anterior embryotoxon, arcus adiposus, arcus juvenilis, arcus lipoides, arcus senilis, gerontoxon, linea corneae senilis, lipoidosis corneae. (05 Mar 2000) |
| arcus alveolaris mandibulae | The free margin of the alveolar process of the mandible. Synonym: arcus alveolaris mandibulae, limbus alveolaris. (05 Mar 2000) |
| arcus alveolaris maxillae | The free border of the alveolar process of the maxilla. Synonym: arcus alveolaris maxillae, limbus alveolaris. (05 Mar 2000) |