| Small Intestine |
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| The small intestine is the most important digestive organ, and it is also the last organ were major digestion is taken place. It has nine to ten feet of tube and fills up a great deal of the abdominal area. It has three main parts: the 'duodenum' the 'jejunum' and the 'ileum' The doudenum, ileum and the jejunum are all connected by a layer of sticky membrane lining called 'mesentery'. These are all shown in the picture to the right. The small blood vessels, called 'villi', lining the small intestine, absorb most of the the nutrients that the small intestine digests, including carbohydrates, protein and fat. The liver and pancreas also help the small intestine's digestion by releasing secretions into the small intestine which absorbs the the same nutrients as the villi. |
| After the chyme has been completely through the small intestine, all the nutrients that we need is now in our body. The majority of the chyme is now all digested. This whole process can take up to 10 hours. The remaining waste product is then passed through to the large intestine. |
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