little boy to mum..."mum where does poo come from?" ...well son replies the mum ......
"The eating and digestion process is a brilliant piece of engineering, Food is mechanically broken down as we chew it, and some digestion occurs in our mouth when food is mixed with saliva. We swallow the smushed up food, and power chemicals and enzymes in our stomach dissolve the food into the various nutrients that our bodies need. By this time, the stuff that had been our food looks a lot like something you'd pour out of a blender. The food smoothie passes into the small intestine, which is a tube about the diameter of your finger and about as long as your car, where nutrients are absorbed into your body. By the time the stuff gets to the end of your small intestine, your body has taken just about every useful thing out of the mix. The mix then passes into the large intestine, where water is absorbed from the mix. As it passes through the large intestine, the mass of useless stuff gets packed together so it may be eliminated in a relatively neat and simple expulsion. It turns brown because of decay, in much the same way that grass clippings turn brown when left on the lawn"
"mmh" replies the little boy "so where does Tigger come from then"......  |
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