Maxillary crest

The nasal septum (Latin: septum nasi) separates the left and right airways in the nose, dividing the two nostrils. The nasal septum (Latin: septum nasi) separates the left and right airways in the nose, dividing the two nostrils. It is depressed by the depressor septi nasi muscle. The fleshy external end of the nasal septum is called the columella or columella nasi, and is made up of cartilage and soft tissue. The nasal septum contains bone and hyaline cartilage. It is normally about 2 mm thick.