| Brain: Orbital gyri | ||
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| Human brainstem anterior view (Gyri orbitales is #6 at upper right) | ||
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| Orbital surface of left frontal lobe. | ||
| Latin | gyrus orbitales | |
| Gray's | subject #189 822 | |
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.
Additional images
 Basal view of a human brain |
External links
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