centrum semiovale

(redirected from medullary center)

cen·trum sem·i·o·va·'le

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

centrum semiovale

The mass of white matter at the center of each cerebral hemisphere.

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

References in periodicals archive ?

ACHS, in contrast, usually results from brainstem lesions or insults affecting the medullary centers that control respiratory drive [3, 7, 8].

Transient Acquired Hypoventilation Syndrome Secondary to Uncal Herniation Is Successfully Treated with Bilevel Noninvasive Positive Pressure Ventilation

After--considerably after--many misdiagnoses led to a dangerously casual dismissal of her symptoms, this capsule summary of her syndrome emerged: "Electrical injury often results in ventricular fibrillation and injury to the medullary centers of the brain.

A Match to the Heart

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