The chiasmatic groove (chiasmatic sulcus, optic groove, prechiasmatic sulcus) is a transverse groove upon the superior aspect of the body of sphenoid bone within the middle cranial fossa. It is bounded anteriorly by the sphenoidal limbus (a variably prominent ridge also representing the posterior boundary of the sphenoidal jugum), and posteriorly by the tuberculum sellae.
The chiasmatic groove (chiasmatic sulcus, optic groove, prechiasmatic sulcus) is a transverse groove upon the superior aspect of the body of sphenoid bone within the middle cranial fossa. It is bounded anteriorly by the sphenoidal limbus (a variably prominent ridge also representing the posterior boundary of the sphenoidal jugum), and posteriorly by the tuberculum sellae.
Source: Wikipedia "Chiasmatic groove" · CC BY-SA 4.0
Share this article: X · Bluesky