Orbital gyri

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Brain: Orbital gyri
Human brainstem anterior view 2 description.JPG
Human brainstem anterior view (Gyri orbitales is #6 at upper right)
Gray729 orbital gyrus.png
Orbital surface of left frontal lobe.
Latin gyrus orbitales
Gray's p.822
TA A14.1.09.216
FMA FMA:72020

The inferior or orbital surface of the frontal lobe is concave, and rests on the orbital plate of the frontal bone. It is divided into four orbital gyri by a well-marked H-shaped orbital sulcus. These are named, from their position, the medial, anterior, lateral, and posterior orbital gyri. The medial orbital gyrus presents a well-marked antero-posterior sulcus, the olfactory sulcus, for the olfactory tract; the portion medial to this is named the straight gyrus, and is continuous with the superior frontal gyrus on the medial surface.

Function[edit]

Bailey and Bremer reported that stimulation to the central end of the vagus nerve caused electrical activity in the inferior orbital surface. (http://brain.oxfordjournals.org/cgi/pdf_extract/75/2/244)

Additional images[edit]

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.