• Question: why do we cry?

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      • Royal Society of Chemistry: Find out more about:
      Asked by Meg to Anaïs, Peter, Shreesha on 19 Mar 2015.
      • Photo: Peter Maskell

        Peter Maskell answered on 19 Mar 2015:

        we are not sure but here is an article on why we cry:-

        http://www.independent.co.uk/life-style/health-and-families/features/why-do-we-cry-the-science-of-tears-9741287.html

      • Photo: Anaïs Pujol

        Anaïs Pujol answered on 20 Mar 2015:

        Tears are present constantly in your body and are stocked in lacrimal glands. There are three different types of tears.
        1- lubricate role to hydrate cornea and remove impurity from the eyes. For this reason you need to blink your eyes often.
        2-Protective role, to protect cornea against aggressive substance which could irritate it (like when you cut an onion you cry, reflex tears).
        3-When we have big emotion, the brain is responsible for the tears (our hypothalamus is responsible of our emotion in the brain). It has a role of regulation and will open tears to freedom our body from ‘hormones and stress’. It a protection psychic.

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