Orbital gyri
From Wikipedia the free encyclopedia
| 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 | gyri orbitales |
| NeuroLex ID | birnlex_1223 |
| TA98 | A14.1.09.216 |
| TA2 | 5464 |
| 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
[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
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Orbital gyri shown in red. -
Orbital surface of brain. -
Close up of orbital gyri. -
Human brain bottom view. Orbital gyri shown in red. -
Human brain bottom view. Orbital gyri not labelled, but seen at top.
References
[edit]
This article incorporates text in the public domain from page 822 of the 20th edition of Gray's Anatomy (1918)
External links
[edit]
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