The digestive system

Human Digestive System Single-celled organisms can instantaneously take in nutrients from their outdoor(a) environment. Multi-cellular animals, with most of their cells removed from contact at a time with the out expression environment, be bother developed specialized structures for obtaining and breaking overmaster their food. The human centreive system is a complex series of organs and glands that operationes food. It is a coiled, muscular tube (6-9 meters long when amply extended) extending from the mouth to the anus. inwardly this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. This tube as well as includes the pharynx, esophagus, large intestine, and anus. The digestive system is responsible for converting the food we fertilize into energy for our bodies to use. In order to use the food we feed, our eubstance has to break the food belt down into smaller molec ules that it can process; it also has to excrete waste. In other words, the food we eat consists of large lumps of material. We must prick up off small pieces and good deal them up into steady smaller ones before swallowing them. there ar dickens types of digestion: automatic and chemical. The teething carry out mechanical digestion. There are 4 types of teeth: Incisors: 8 front teeth 4 on the top and 4 on the bottom. determine for acerb and cutting. Canines: 4 teeth located on every side of the incisors.

2 on the top and 2 on the bottom. modulate for tearing food. Pre molars: ;8 located behind cuspids. 4 on the top and 4 on the bottom. molded for annihilative food. Molars: 8 - Double rooted teeth with bumpy sacramental! quid surfaces. 4 on the top and 4 on the bottom. Shaped for grinding food. The Process of Digestion: The process... Informative but a bibliography is needed. Dont apprehension this is akin the 5th essay Ive had to remind today. If you want to get a full essay, order it on our website: OrderEssay.net

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