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Vestibule Region of the Nasal Cavity

The image descriptionvestibule is the portion of the nasal cavity that lies directly posterior to the image descriptionexternal nares (or nostrils).

 

Midsagittal view of head and a zoom in of stratified squamous epithelium
Midsagittal view of head and the vestibule labeled
Midsagittal view of head and the external naris labeled
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  • Because it is located near the body surface, the vestibule region is frequently exposed to destructive agents. To compensate, it is lined by the same image descriptionstratified squamous epithelium that makes up the skin. The multiple layers of cells in this tissue create a barrier that helps protect the vestibule from damage.
Midsagittal view of head and a zoom in of stratified squamous epithelium
Stratified squamous epithelium labeled
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  • Embedded in the epithelial lining are large nose hairs, called image descriptionvibrissae.
Midsagittal view of head and a zoom in of stratified squamous epithelium
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  • A layer of image descriptionmucus typically covers the outer surface of the vibrissae.
Midsagittal view of head and a zoom in of stratified squamous epithelium
Mucus labeled in a zoomed-in image of epithelium
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  • During inhalation, many airborne particles image descriptionadhere┬áto the mucus-lined vibrissae, which prevents them from passing deeper into the respiratory passageways.
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles animation
Airborne particles adhere to the mucus-lined vibrissae

An Overview of the Vestibule Region of the Nasal Cavity:

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Test yourself while observing the Vestibule Region of the Nasal Cavity
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