• Question: why do we have two nostrals

    Asked by cammyhappy to Amy, Sarah, Will on 21 Jun 2012.
    • Photo: Sarah Martin

      Sarah Martin answered on 21 Jun 2012:

      Hi cammyhappy,

      That’s because we have two of lots of other things as well – we’re built to be symmetrical by default, with some exceptions of our inner organs. Even our mouth is symmetrical – OK, it might only be one mouth, but you have two sets of each tooth, on either side!
      We could easily live with just one nostril in the middle, but it might make our nose floppy if the middle bit is missing, and it would look well weird.

      🙂 Sarah

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