part of part of Homo sapiens ethmoid bone ethmoid foramen olfactory foramina of ethmoid bone 2026-03-19T00:00:00Z A bone foramen comprising the multiple small perforations of the cribriform plate through which the olfactory nerve filaments (fila olfactoria) pass from the olfactory mucosa of the nasal roof to the olfactory bulb in the anterior cranial fossa. David Osumi-Sutherland