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vestibule
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Medical illustration showing a sagittal section of the human head focused on the nasal cavity, with labeled parts including the frontal and sphenoid sinuses, ethmoid bone, conchae, nasal vestibule, oral cavity, soft palate, anterior nasal spine, and tongue.
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vestibule

of the nose
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Medical illustration showing a sagittal section of the human head focused on the nasal cavity, with labeled parts including the frontal and sphenoid sinuses, ethmoid bone, conchae, nasal vestibule, oral cavity, soft palate, anterior nasal spine, and tongue.
human nasal cavity Sagittal view of the human nasal cavity.

The vestibule of the nose is the forward section of the nasal cavity, located just inside each nostril. This area is lined with skin that contains coarse hairs called vibrissae, which help filter inhaled air. The vestibule serves as the initial entry point for air into the respiratory tract. It is part of the upper airway system, which also includes the sinuses and pharynx. The nasal cavity itself is complex, featuring bony ridges called nasal conchae that increase surface area for warming and humidifying air before it reaches the lungs.123

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4 Britannica Sources
  1. nose
  2. human respiratory system - The nose
  3. nasal concha
  4. vestibule

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