The cribriform plate connects:
Nasal cavity and anterior cranial fossa
Nasal cavity and orbit
Nasal cavity and oral cavity
Anterior cranial fossa and orbit
The cribriform plate of the ethmoid bone separates the anterior cranial fossa from the nasal cavity. It is a horizontal perforated bony lamina, occupying ethmoidal notch of frontal bone. The cribriform plate contains foramina for olfactory nerve rootlets