Olfactory bulbs
Rhinencephalon or Olfactory bulbs are oval elongated structures in each hemisphere, situated at the anteroventral aspect of the frontal pole and are lodged in the olfactory fossae
- Each bulb receives olfactory nerves coming from the nasal mucosa through the olfactory perforations of the cribriform plate of the ethmoid bone.
- The olfactory tract is a thick and short bundle of fibres that extends back wards and divides into medial and lateral olfactory stria.
- The trigonum olfactorium is a triangular area placed between the two stria.
- The lateral stria is longer and passes backward and outward along the medial aspect of rhinal sulcus and enters the inferior part of the hippocampal involutions.
- The inner one passes backward and inward to the internal aspect of the cerebral hemisphere.
