Alinasal Region

Sides and front of nasal chambers as distinguished from inter nasal septum or partition between the nostrils, in the cartilaginous cranium, as seen in the embryo chick and other vertebrate embryos. The alinasal cartilages are lateral, roof-like outgrowths from the septum nas i, behind the prenasal cartilage or rostrum, and are continuous behind with the ali ethmoids. From this roof the scroll-like turbinals are down growths, the alinasal turbinals being formed in front, the inferior turbinals in the middle or interseptal region, and the superior turbinals in the ali ethmoid or true olfactory region. Here also the roof sends down the ant orbital plate, which forms the partition between the eye-socket and olfactory region.