Where is the nasal mucosa in the nose

Many people may not know where the nasal mucosa is located in the nose. This has a great impact on the cleaning of the nasal mucosa and is not conducive to the treatment of rhinitis. The nasal mucosa is mainly divided into three parts: the vestibule, respiratory and olfactory parts. The nasal mucosa has nasal hairs, which are mainly to isolate bacteria from entering the body and can stimulate the sensitivity of the sense of smell. It is recommended that everyone understand the location of the nasal mucosa.

According to the different structures and functions, the nasal mucosa is divided into three parts: vestibule, respiratory and olfactory.

The vestibule is the part adjacent to the external nostrils, which has abundant nasal hairs that can block the inhalation of larger dust particles in the air.

The respiratory part occupies most of the nasal mucosa and has well-developed epithelial cilia, which can swing toward the pharynx, discharge mucus containing dust particles and bacteria into the pharynx, and eventually expel them from the body. In addition, this part is rich in blood vessels and glands, which warm and moisturize the inhaled air.

The olfactory mucosa is smaller in area and is mainly located at the top of the nasal cavity. It contains olfactory cells and olfactory glands that are responsible for the sense of smell. They secrete odorous particles that can dissolve and reach the olfactory area, stimulating the olfactory hairs on the surface of the olfactory cells to produce the sense of smell. Moreover, because the olfactory cells have different receptors, they can be stimulated by different chemical molecules respectively, thus producing different senses of smell.

Common nasal mucosal lesions

1. Sinusitis

When you have a cold, there is obvious congestion, swelling of the mucous membrane, increased secretions, and narrowing of the nasal passages, which lead to many corresponding symptoms. The mucous membrane of the sinuses is continuous with the mucous membrane of the respiratory system, so rhinitis and colds can easily cause sinusitis.

2. Olfactory impairment

When there is an inflammatory infection or a local space-occupying lesion, the mucosa swells, becomes overly congested, and secretions are excessive, which, on the one hand, causes nasal obstruction, blocking the airflow carrying olfactory factors and preventing it from reaching the olfactory area. On the other hand, due to the swelling of the mucosa compressing and affecting the function of olfactory cells and olfactory glands, it may cause decreased olfactory function.

3. Allergic rhinitis

Also known as allergic rhinitis, it is a non-infectious inflammatory disease of the nasal mucosa mainly mediated by IgE after the body comes into contact with allergens. The clinical features are nasal itching, sneezing, increased nasal secretions, and swelling of the nasal mucosa.

examine

Imaging examination: The most important imaging signs of nasal mucosal abnormalities are abnormalities in mucosal thickness and morphology. Diffuse increase in thickness is often seen in atrophic rhinitis. Localized mucosal thickening or the formation of pedunculated or sessile soft tissue masses can be seen in polyps, granulomas, benign or malignant tumors. If not combined with clinical manifestations or biopsy, the pathological nature of the findings cannot be determined by imaging alone. However, hemangioma may be an exception, because plain X-ray films and plain CT scans may reveal phleboliths or calcifications in the soft tissue mass shadow of this type of tumor, and the mass is significantly enhanced on enhanced CT scans. MRI shows a signal intensity similar to that of muscle and often contains patchy high signal areas, which is characteristic.

treat

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