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Medical Term:

prechiasmatic sulcus


Definition: the groove on the upper surface of the sphenoid bone running transversely between the optic canals bounded anteriorly by the sphenoidal limbus and posteriorly by the tuberculum sellae; forms in relationship to the optic chiasm.

Synonym(s): sulcus prechiasmaticusTA, chiasmatic groove, chiasmatic sulcus, optic groove

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.