The ground comprises the premaxilla and the palatine bones. Nose anatomy. Image used with permission. Nose anatomy. Picture used with permission. Nostril anatomy. The quadrangular cartilage, the vomer, the perpendicular plate of the ethmoid and elements from the premaxilla and palatine bones form the nasal septum. Nostril anatomy. The quadrangular cartilage, the vomer, the perpendicular plate of the ethmoid and elements from the premaxilla and palatine bones kind the nasal septum.
