Nasal spine

Nasal Spine

The Nasal Spine is a small, pointed process of bone that serves as a key anatomical landmark in the human skull. It is located at the base of the nasal cavity, and is part of the maxilla, or upper jaw bone.

Anatomy

The nasal spine is a bony projection at the lower part of the nasal aperture. It is formed by the fusion of two small bones, the anterior nasal spine of the maxilla and the posterior nasal spine of the palatine bone. The nasal spine is located at the midline, and is easily palpable in most individuals.

Function

The primary function of the nasal spine is to support the cartilaginous septum of the nose. This septum divides the nasal cavity into two halves, and the nasal spine provides a firm base for this structure. The nasal spine also plays a role in facial structure and appearance, as it contributes to the shape of the nasal tip.

Clinical Significance

The nasal spine is a key landmark in various surgical procedures involving the nose, such as rhinoplasty and septoplasty. Its position and size can affect the outcome of these surgeries. In some cases, the nasal spine may be surgically altered to change the shape of the nose or to improve breathing.

See Also

• Nasal bone
• Nasal septum
• Maxilla
• Palatine bone