Nasal bone

The paired nasal bone is a small, elongated bone that forms the root of the nose. Read more about its location and function here!

Nasal bone

The nasal bone or Os Nasale is paired and belongs to the facial bones. It forms the upper part of the nose bridge (nose root), which contributes to the size and shape of the nose. The nose bone is particularly sensitive to injuries and broken bones. Read all about the nasal bone here: structure, location and common health problems in the area of ​​the nasal bone!

What is the nose bone?

The nasal bone is a small, elongated bone that represents the bony upper portion of the nasal bridge. It is paired and both bones collide in the middle in a suture, the sutura internasalis. This bone suture does not ossify until the growth is complete, which is why the size of the nose changes as it grows.

On the inner surface of the nasal bone there is a groove (ethmoid sulcus), in which runs a nerve (ethmoid anterior nerve, a branch of the ethmoid nerve), which supplies the nasal mucosa.

What is the function of the nose bone?

The paired nasal bone forms the nasal root, which forms part of the nasal cavity roof. It contributes significantly to the function of the nose: In the nose, the inhaled air is heated, cleaned and moistened before it reaches the lower respiratory tract. Fragrances and odors can be perceived with the olfactory mucosa in the nose. In addition, the nasal cavity and paranasal sinuses are involved as resonance space in the phonation during speech.

Where is the nose bone?

At the top, the nasal bone is adjacent to the lower side of the frontal bone. The two bones are connected by a bone suture, the sutura frontonasalis.

On both sides the nasal bone is connected to another suture (sutura nasomaxillaris) with an extension of the upper jaw, the processus frontalis maxillae.

The lower margin of the nasal bone forms part of the outline of the outer opening of the bony nose.

Inside the nose there is a connection of the nasal bone with the nasal septum (septum nasi). The nasal septum is partly cartilaginous, partly connective tissue.

What problems can the nose bone cause?

Bruising of the nasal bone is quite painful. A nasal bone fracture is also very unpleasant: important symptoms include nosebleeds (if the nasal mucosa is also injured), reddened eyes and often a deformed nose. The broken nose is one of the most common injuries to the facial bones, because even a relatively small force can break the nasal bone.

In case of a greater force, the adjacent extension of the upper jaw (frontal process) may additionally break.

Benign and malignant tumors and bone metastases in the nasal bone are also possible.


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