Chiasmatic groove

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Chiasmatic groove
Gray145.png
Sphenoid bone. Upper surface. (Sulcus chiasmaticus labeled at center)
Gray193.png
Base of the skull. Upper surface. (Sphenoid bone is yellow; chiasmatic groove labeled at center left, fourth from the top of the labels near the yellow region.)
Details
Latin Sulcus praechiasmaticus,
sulcus chiasmaticus
Identifiers
Gray's p.147
Dorlands
/Elsevier
s_28/12769648
TA A02.1.05.005
FMA 75760
Anatomical terms of bone

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.

Chiasmatic groove

References[edit]

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links[edit]