The Anatomy Of The Straight Gyrus Of The Human Brain

Description

Running along the ventromedial surface of the frontal lobe, the straight gyrus (gyrus rectus) appears as a longitudinal cortical ridge medial to the olfactory sulcus and lateral to the interhemispheric fissure. As the camera tracks anterior to posterior, the animation clarifies how the gyrus rectus relates inferiorly to the olfactory tract and bulb region and superiorly to the medial frontal cortex. Subtle rotation from an inferior frontal view toward a more medial perspective helps orient the viewer to adjacent landmarks, including the orbital gyri and the medial orbital surface of the frontal lobe. Clinically, this strip of cortex matters because it sits on the surgical corridor for anterior cranial fossa and sellar approaches, where retraction or dissection near the olfactory sulcus risks anosmia and injury to the olfactory tract. Small planum sphenoidale and olfactory groove meningiomas often displace the gyrus rectus and olfactory apparatus, and understanding the normal topography supports interpretation of preoperative MRI and intraoperative navigation. Motion makes the relationships stick, since the gyrus rectus can look deceptively similar to neighboring orbital gyri in static plates until you watch the sulcal boundaries and midline structures come into register. Use this animation in neuroanatomy teaching for frontal lobe surface anatomy, in neurosurgical education covering subfrontal and endonasal corridors, or in medical publishing where precise terminology around the olfactory sulcus and gyrus rectus is needed for labeling and narration. A clean reference. Anatomical accuracy verified by SciePro's Medical Advisory Board.