What is the primary function of the nasal septum?

The primary function of the nasal septum is to divide the nasal cavities into two distinct chambers. This structural feature is crucial because it allows for the separation of airflow between the two nostrils, which can help regulate airflow and facilitate breathing. Additionally, by dividing the nasal cavities, the septum aids in the proper function of other nasal structures that are involved in warming, humidifying, and filtering the air we breathe.

While the nasal septum contributes indirectly to other functions such as filtering air or supporting the nose, its main anatomical purpose is as a partition between the left and right nasal passages. This division is important for overall respiratory health and function, influencing how air is processed before it enters the lungs. The septum also plays a role in olfactory function, but this is not its primary role.