Sunday, March 18, 2012
Digestive System
Hi children, do we not have our breakfast, lunch and dinner everyday? Do you know how do we benefit from these into nutrients? In this post, we’ll learn about how we digest food into nutrients. Human digestive system consists of few stages, from the intake of food, digestion, absorption to excrement. The purpose of munching the food we take is to ease the digestive process.
When food is masticated, despite the transformation into smaller pieces, the nutrients are yet to be absorbed. Our saliva facilitate this process, where it serves as an agent to help the absorption of nutrients before the food traverses to the stomach. Therefore, saliva is the front end of our digestive system.
As food traverses into the stomach through esophagus, the food is to be digested through various types of enzymes. There is this good companion of the stomach, termed as the Liver. Liver is the biggest digestive gland in our body, it is a multi-functional organ. Aside from being a digestive organ, it helps to temporary store nutrients attained from the food we take. It helps to remove the toxins in our food and convert them into urea that will eventually leave the body. Moreover, liver is one of the important factors in the generation of blood cells.
After the cleansing process from the stomach, the nutrients attained are to be absorbed by the small intestine. Nutrients are to be categorized for their types and sent to their respective destination. Food will traverse through the small intestine to the rectum.
As food reaches the rectum, nutrients left are mostly absorbed. The substances left are mostly indigestible. The remnants are to be called “feaces”. Feaces usually stink because of the existence of bacteria. Lastly, the peristalsis action would push the ‘feaces’ out of the body through the rectum and anus, this process is termed as “excrement”.
At times we would experience some peculiar sound “gooluuoooo” from the bowel because there is air traversing in our bended intestine. Partly because it is originated from the mixture of air and food during our consumption of food or the by-products of digestive process.
We often say consuming vegetables is good because they are rich in fibres. But do you know that we may not be able to digest fibres from the plant? However, but it is often helpful to ease the peristalsis process of our intestine.
Shared by,
Kok Hou.
Translated by,
SkyChin.
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