Olfactory Nerves, Lateral View

Description

Olfactory nerve filaments (fila olfactoria) ascend from the olfactory mucosa through the foramina of the cribriform plate of the ethmoid bone to synapse in the olfactory bulb, which rests immediately superior to the anterior cranial fossa. From the posterior aspect of the bulb, the olfactory tract courses posteriorly along the inferior surface of the frontal lobe toward the olfactory trigone and anterior perforated substance. Laterally, the tract and bulb sit medial to the orbital roof and superior to the nasal cavity. Fine anatomy, seen in profile. A lateral perspective clarifies the precarious relationship between the olfactory bulb, cribriform plate, and frontal lobe, the exact interface injured in anterior skull base trauma with cribriform fractures and post-traumatic anosmia. It also supports surgical and teaching discussions around endoscopic endonasal approaches and skull base tumor resections (for example, olfactory groove meningioma), where preserving or sacrificing olfaction hinges on recognizing the bulb and tract as they cross the anterior cranial fossa. CSF rhinorrhea enters the same conversation. Use this artwork for neuroanatomy and head and neck anatomy courses when introducing CN I, the anterior cranial fossa, and the pathway from receptor neuron axon fascicles to the olfactory bulb and tract. It also fits ENT and neurosurgical educational materials on skull base fractures, anosmia workup, and operative corridors around the cribriform plate. Anatomical accuracy verified by SciePro's Medical Advisory Board.