1. Cranial Cavity

The cranial cavity contains the brain, its meninges and blood vessels. The roof of the cavity is formed by the parietal and frontal bones. The rostral wall is formed by the cribriform plate of the ethmoid, and the caudal wall is formed by the occipital bone. The floor or the base of the cavity is formed by the sphenoid rostrally and the temporal and occipital caudally.