prechiasmatic sulcus

prechiasmatic sulcus
sulcus prechiasmaticus [TA] a furrow on the superior surface of the sphenoid bone, located just anterior to the tuberculum sellae; it lodges the optic chiasm. Called also chiasmatic s., s. chiasmatis, optic groove, and optic s.

Medical dictionary. 2011.

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  • Sulcus — From the Latin for a groove, furrow, or trench. In medicine, there are many sulci (plural of sulcus) as, for example, the superior pulmonary sulcus. * * * 1. [TA] One of the grooves or furrows on the surface of the brain, bounding the several… …   Medical dictionary

  • groove — A narrow, elongate depression or furrow on any surface. SEE ALSO: sulcus. alveolobuccal g. the upper and lower half of the buccal vestibule on each side. SYN: alveolobuccal sulcus, gingivobuccal g., gingivobuccal sulcus. alveololabial g. 1. the… …   Medical dictionary

  • Chiasmatic groove — Bone: Chiasmatic groove Sphenoid bone. Upper surface. (Sulcus chiasmaticus labeled at center) …   Wikipedia

  • limbus — The edge, border, or fringe of a part. [L. a border] l. acetabuli [TA] SYN: acetabular margin. l. alveolaris 1. SYN: alveolar arch of mandible. 2. SYN: alveolar arch of maxilla. l …   Medical dictionary

  • tuberculum sellae turcicae — [TA] tubercle of sella turcica: a transverse ridge on the superior surface of the body of the sphenoid bone; it is anterior to the sella turcica, posterior to the prechiasmatic sulcus, and between the anterior clinoid processes …   Medical dictionary

  • Body of sphenoid bone — Infobox Bone Name = Body of sphenoid bone Latin = corpus ossis sphenoidalis GraySubject = 35 GrayPage = 147 Caption = Figure 2: Sphenoid bone, anterior and inferior surfaces. Caption2 = Figure 3: Sphenoid bone, upper and posterior surfaces.… …   Wikipedia

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