Olfactory Sulcus Of The Brain (Inferior View)

Description

Olfactory sulcus anatomy is framed on the inferior surface of the frontal lobe, where a narrow longitudinal groove runs anteroposterior along the orbital surface. Nestled within this sulcus, the olfactory bulb rests anteriorly and continues posteriorly as the olfactory tract, which courses toward the anterior perforated substance and basal forebrain. Medial to the groove lies the gyrus rectus, while the orbital gyri sit lateral, helping you orient the sulcus relative to the midline and the broader olfactory groove region of the anterior cranial fossa. Basal frontal relationships are unambiguous. Clinically, this is the corridor where blunt head trauma and shearing at the cribriform plate can disrupt olfactory filaments, producing anosmia despite an otherwise normal neurologic exam, and it is also the surface anatomy used to localize olfactory groove meningiomas that compress the bulb and tract from below and displace the gyrus rectus. The fixed inferior perspective supports teaching of the orbital frontal topography that guides endoscopic endonasal and subfrontal surgical approaches, where identifying the olfactory tract early can reduce postoperative smell disturbance. Subtle spatial cues matter. Neuroanatomy instructors can place this illustration into modules on the frontal lobe, olfactory pathway, and anterior cranial fossa landmarks, while neurosurgery and ENT teams can use it in preoperative counseling diagrams when discussing olfactory groove masses or CSF leak risk near the cribriform plate. It also suits atlases and journal figures that need a basal brain reference for the olfactory bulb and tract without distraction from lateral convexity structures. Anatomical accuracy verified by SciePro's Medical Advisory Board.