Upper respiratory tract — Free Biology Illustration | GPAI | GPAI

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Upper respiratory tract — Free Biology Illustration | GPAI | GPAI

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Upper respiratory tract

Upper respiratory tract

Biology

Upper respiratory tract

A simplified side-view human upper airway structure showing the nasal cavity, mouth region, pharynx, and upper trachea as a continuous hollow passage. The walls are pale pink with smooth anatomical contours, lined by a moist inner mucosal surface surrounding the open airway channel.

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