The olfactory bulb is a flattened oval structure that lies on the undersurface of the orbital frontal cortex, near the anterior end of the olfactory sulcus. The bulb is supported and protected by the cribriform plate which separates it from the olfactory epithelium. Olfactory nerve axons pass thru the cribriform plate to enter the olfactory bulb where they synapse in the olfactory glomeruli.
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