The respiratory tract begins with the nose which includes the external nose, internal nasal cavities and paranasal sinuses.
View Anatomy Nasal Passages PNG. It consists of nasal skeleton, which houses the nasal cavity. The external nasal anatomy is quite simple.
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There are several different kinds. Opening communicating these passages with the nasal passages are called choanae. The nasal passages function as a filter and air conditioner to protect the lower airways.
It consists of nasal skeleton, which houses the nasal cavity.
This functionality is achieved by the complex, narrow, convoluted, and dynamic geometry of the nose. Passages that are lined with mucous membranes and tiny hairs (cilia) that help to filter the air. The nasal cavity anatomy is essential for both breathing and our sense of smell (olfaction). Air enters the nasal cavity through the anterior nasal aperture and travels through three passages:
