TA A02.1.05.005 | FMA 75760 | |
 | ||
Latin Sulcus praechiasmaticus,sulcus chiasmaticus | ||
The superior surface of the body of the sphenoid bone is bounded behind by a ridge, which forms the anterior border of a narrow, transverse groove, the chiasmatic groove (optic groove, prechiasmatic sulcus), above and behind which lies the optic chiasma of cranial nerve 2 (the optic nerve).
The groove ends on either side in the optic foramen, which transmits the optic nerve and ophthalmic artery into the orbital cavity.
References
Chiasmatic groove Wikipedia(Text) CC BY-SA