ansa subclavia


an·sa sub·cla·'vi·a

[TA] a nerve cord connecting the middle cervical and inferior cervical or stellate sympathetic ganglia, forming a loop around the subclavian artery. Synonym(s): subclavian loop, Vieussens ansa, Vieussens loop

an·sa sub·cla·vi·a

(an'să sŭb-klā'vē-ă) [TA] A nerve cord connecting the middle cervical and stellate sympathetic ganglia, forming a loop around the subclavian artery.

Vieussens,

Raymond de, French anatomist, 1641-1715. valve of Vieussens - a prominent valve in the great cardiac vein where it turns around the obtuse margin to become the coronary sinus.Vieussens annulus - Synonym(s): Vieussens ringVieussens ansa - Synonym(s): Vieussens loopVieussens centrum - the great mass of white matter composing the interior of the cerebral hemisphere. Synonym(s): centrum semiovaleVieussens foramina - a number of fossae in the wall of the right atrium, containing the openings of minute intramural veins. Synonym(s): foramina of the venae minimaeVieussens ganglia - the largest and highest group of prevertebral sympathetic ganglia, located on the superior part of the abdominal aorta, on either side of the origin of the celiac artery. Synonym(s): celiac gangliaVieussens isthmus - Synonym(s): Vieussens ringVieussens limbus - Synonym(s): Vieussens ringVieussens loop - a nerve cord connecting the middle cervical and stellate sympathetic ganglia, forming a loop around the subclavian artery. Synonym(s): ansa subclavia; Vieussens ansaVieussens ring - a muscular ring surrounding the fossa ovalis in the wall of the right atrium of the heart. Synonym(s): limbus fossae ovalis; Vieussens annulus; Vieussens isthmus; Vieussens limbusVieussens valve - the thin layer of white matter stretching between the two superior cerebellar peduncles forming the roof of the superior recess of the fourth ventricle. Synonym(s): superior medullary velumVieussens veins - the small superficial veins of the heart. Synonym(s): innominate cardiac veinsVieussens ventricle - a slitlike, fluid-filled space of variable width between the left and right transparent septum. Synonym(s): cavity of septum pellucidum