• Question: What makes you pee?

    Asked by robert1 to Cathal, Ciara, Emma, Michael, Sive on 16 Nov 2013.
    • Photo: Michael Nolan

      Michael Nolan answered on 16 Nov 2013:

      Hi robert,
      similar to other questions on farts, it is to get rid of waste from food an liquid digestion. if you dont pee you build up nasty wastes that will harm you, so this is one way ykur body gets rid of liquid waste.

      M

    • Photo: Sive Finlay

      Sive Finlay answered on 17 Nov 2013:

      Hey Robert,
      Yep it’s to get rid of waste. The urea cycle (making urine) happens in your kidneys and it’s what gets rid of waste which would otherwise be toxic to our body. It’s particularly important for getting rid of excess nitrogen which we need for growth but which is toxic in high quantities.
      What makes us pee is a natural reflex to get rid of this waste.
      The urine is transported from your kidney to your bladder which acts like a big balloon. As the bladder stretches when it fills the increased pressure sends nervous signals to the spinal cord and up to the brain to say that we need to pee. Toilet training is all about teaching children to recognise this feeling and exert a conscious control over delaying urination. We can postpone the reflex for a while but not forever!
      Sive

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