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What organ on the human face functions alternately with one of its halves? Detailed answer

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What organ on the human face functions alternately with one of its halves?

Most people, due to the natural nasal cycle, breathe through only one nostril at a time. The change of the "leading" nostril occurs cyclically, on average every 4 hours. This is due to the same periodic increase and decrease in the width of the lumen in each of the halves of the nasal cavity, which occur due to the expansion and contraction of blood vessels.

Authors: Jimmy Wales, Larry Sanger

 Random interesting fact from the Great Encyclopedia:

How did the stalls in the theaters of the Pushkin era differ from what we are used to?

During the time of Pushkin, not all the stalls of the theater were occupied by chairs. They were only in the first few rows for especially noble and wealthy gentlemen. Behind these rows was a standing stalls area, tickets to which were much cheaper. There were usually creative people, students, clerks - they were the most active part of the audience, setting the tone for applause and cries of "Bravo!" A lot of theater-goers crowded into the stalls for especially popular performances, the most inveterate of which came 2-3 hours before the start and occupied the best standing places.

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