Nasal Cavity

Nasal Cavity

The Nasal Cavity is a large, air-filled space above and behind the nose in the middle of the face. Each nostril provides an entrance to the cavity. The nasal cavity is divided into two by the nasal septum.

Structure

The nasal cavity is divided into two sections: the respiratory region and the olfactory region. The respiratory region is lined with a mucous membrane, and it warms and moistens incoming air. The olfactory region is located at the top of the nasal cavity and is responsible for the sense of smell.

Nasal Septum

The nasal septum is a thin wall made of cartilage and bone. It separates the left and right airways in the nose, dividing the two nostrils.

Nasal Mucosa

The nasal mucosa is the lining of the nasal cavity. It warms and moistens the air that enters the nasal cavity. The mucosa also traps dust particles and bacteria, preventing them from entering the lungs.

Function

The nasal cavity has several functions. It warms and moistens the air that is breathed in, which prevents the lungs from drying out. It also traps dust particles and bacteria, preventing them from entering the lungs. The nasal cavity also contains the olfactory region, which is responsible for the sense of smell.

Clinical significance

Diseases and conditions that affect the nasal cavity can cause a variety of symptoms, including nasal congestion, runny nose, and loss of smell. These conditions include allergies, sinusitis, and nasal polyps. Treatment for these conditions may include medication, surgery, or other therapies.

See also

• Nose
• Respiratory system
• Olfactory system

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