nasal septum

The nasal septum is the tissue that divides the nasal cavity into left and right parts. Consists of bone, cartilage, and mucous membranes. Lined with mucous membranes and skin. The nasal septum is divided into left and right cavities, and the front is connected to the outside through the nostril, and the back is connected to the throat through the nostril. Each side of the nasal cavity can be divided into a nasal vestibule and an intrinsic nasal cavity. The two are bounded by a nasal valve. The nasal vestibule refers to an enlarged space surrounded by the wing of the nose. The inner surface is lined with skin and has nasal hairs. The nasal septum is composed of the ethmoidal vertical plate, vomera, and nasal septum cartilage. It is often biased to one side and to the left. There are abundant vascular anastomosis in the anterior lower mucosa, and about 90% of the nosebleeds occur here. It is clinically called the bleeding-prone area, that is, the Little or Kiesselbach area.