What structure separates the left and right nasal cavities?

The nasal septum is the structure that divides the left and right nasal cavities. It is composed of both bone and cartilage and plays an essential role in maintaining the shape of the nasal passages while ensuring proper airflow and function. The bony portion of the nasal septum consists primarily of the perpendicular plate of the ethmoid bone and the vomer bone, while the front part is made up of the septal cartilage.

This division provided by the nasal septum not only facilitates the functional organization of the nasal cavities but also contributes to the overall anatomy of the nasal structure, allowing for optimal respiratory processes and air filtration. Understanding the function and composition of the nasal septum is crucial for studying related anatomical and physiological topics, such as nasal disorders or corrective surgery.