part of part of develops from develops from contributes to morphology of nose nasal septum FMA:54375 SCTID:181197004 VHOG:0000017 EMAPA:17608 septal cartilage EHDAA2:0001234 EHDAA2:0004104 MESH:D009300 Wikipedia:Nasal_septum The nasal septum separates the left and right airways in the nose, dividing the two nostrils. It is depressed by the Depressor septi nasi muscle. [WP,unvetted]. NCIT:C33160 septum of the nose AAO:0000559 AAO:0010135 UBERON:0001706 septum mobile nasi EHDAA:6809 GAID:115 MA:0000285 septum nasal skeleton intermaxillary process ethmoid region