Answer:
Nasal septum.
Step-by-step explanation:
Nasal septum is also known as columella that consists of soft bones and cartilage. The nasal septum is derived from the ethmovomerine cartilage.
The main function of the nasal septum is the division of two nasal cavities. This separates the right and left airways of the nose. The nasal septum is depressed by depressor septi nasi muscle.
Thus, the answer is nasal septum.