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the great mass of white matter comprising the interior of the cerebral hemisphere; the name refers to the general shape of this white core in axial (horizontal) sections of the hemisphere.
Synonym(s): centrum medullare, centrum ovale, medullary center, semioval center, Vicq d'Azyr centrum semiovale, Vieussens centrum
Farlex Partner Medical Dictionary © Farlex 2012
The mass of white matter at the center of each cerebral hemisphere.
See also: centrum
Medical Dictionary, © 2009 Farlex and Partners
Vicq d'Azyr,Félix, French anatomist, 1748-1794.
Vicq d'Azyr bundle - a compact, thick bundle of nerve fibers that passes from the mamillary body to terminate in the anterior nucleus of the thalamus. Synonym(s): mamillothalamic fasciculus
Vicq d'Azyr centrum semiovale - the great mass of white matter composing the interior of the cerebral hemisphere. Synonym(s): centrum semiovale
Vicq d'Azyr foramen - a small triangular depression at the lower boundary of the pons that marks the upper limit of the median fissure of the medulla oblongata. Synonym(s): foramen cecum medullae oblongatae
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 ring
Vieussens ansa - Synonym(s): Vieussens loop
Vieussens centrum - the great mass of white matter composing the interior of the cerebral hemisphere. Synonym(s): centrum semiovale
Vieussens 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 minimae
Vieussens 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 ganglia
Vieussens isthmus - Synonym(s): Vieussens ring
Vieussens limbus - Synonym(s): Vieussens ring
Vieussens loop - a nerve cord connecting the middle cervical and stellate sympathetic ganglia, forming a loop around the subclavian artery. Synonym(s): ansa subclavia; Vieussens ansa
Vieussens 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 limbus
Vieussens 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 velum
Vieussens veins - the small superficial veins of the heart. Synonym(s): innominate cardiac veins
Vieussens ventricle - a slitlike, fluid-filled space of variable width between the left and right transparent septum. Synonym(s): cavity of septum pellucidum
Medical Eponyms © Farlex 2012