Nostril
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A nostril is either of the two orifices of the nose. They enable the entry and exit of air and other gasses through the nasal cavities. In birds and mammals, they contain branched bones or cartilages
Human nostrils
Nasal hair
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Nasal hair or nose hair is the hair in the nostril. Adult human noses have hairs, which serve as a crude air filter to stop foreign particles from entering the nasal cavity, as well as to help collect
Nostril
…human embryos at an early stage. If these fail to join up, the result is a cleft palate. Each external nostril contains approximately 1,000 strands of nasal hair, which function to filter foreign particles such as pollen and dust. It is possible for humans to smell different olfactory inputs in the two nostrils…
Nasal hair