Orbital gyri

Orbital gyri

Human brain bottom view. Orbital gyri shown in green.

Orbital surface of left frontal lobe. Orbital gyri shown in orange.
Details
Identifiers
Latin gyrus orbitales
NeuroLex ID Orbital gyri complex
TA A14.1.09.216
FMA 72020

Anatomical terms of neuroanatomy

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

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

References

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

Wikimedia Commons has media related to Orbital gyri.



This article is issued from Wikipedia - version of the 3/9/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.