Rhinencephalon
Olfactory bulbs
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These are oval elongated structures in each hemisphere, situated at the anteroventral aspect of the frontal pole and are lodged in the olfactory fossae.
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Each bulb receives olfactory nerves coming from the nasal mucosa through the olfactory perforations of the cribriform plate of the ethmoid bone.
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The olfactory tract is a thick and short bundle of fibres that extends back wards and divides into medial and lateral olfactory stria.
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The trigonum olfactorium is a triangular area placed between the two stria.
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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.
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The inner one passes backward and inward to the internal aspect of the cerebral hemisphere.
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Last modified: Sunday, 16 October 2011, 5:42 AM