The septum or nasal septum is the cartilaginous wall that divides the two nostrils. The cartilage is, however, usually not pierced. It is the thin strip of very soft and flexible skin, just between the cartilage and the bottom of the nose, where septum piercing is mostly done.Septum The piece of tissue in the middle of the nose separating the two nostrils. A septum piercing is often incorrectly regarded as a cartilage piercing. While some people do have septum piercings which pass through cartilage, most septum piercings pass through the small bit of tissue directly beneath the cartilage and above the skin.
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