What is the Name of the External Tissue on the Underside of the Nose That Separates the Nostrils?

If you are looking at the base view of your nose, the skin from your upper lip to the apex of your nostrils is columellar skin. Above the apex of the nostrils is called the infratip lobule. Hope this helps. Dr Joseph

Hello,

I believe the anatomical area you are referring to is the COLUMELLA.

I hope this helps.

Dr. Sajjadian

The nasal septum is the central structure inside the nose that divides the nasal cavity into left and right sides, and it is comprised of cartilage, bone, and mucous membranes on either side. The skin below the septum is the columella. You can actually pinch the skin of the columella and move it back and forth over the caudal (lower edge or "tail" end) of the septal cartilage.

The frenulum is the band of mucous membrane that runs from the midline of the lip to the gum inside your upper and lower lips. Another frenulum is the band on the underside of the tongue.

In non-medical terms, the columella is the skin that hangs down between your nostrils. This is where an incision is made for open rhinoplasty. Closed rhinoplasty uses incisions only inside the nostrils.

BTW, any physician (not just rhinoplasty surgeons) knows this anatomic definition is definitive. Hope that clears this up! Best wishes! Dr. Tholen