Digestive System Pre Lab

Digestive System Pre Lab - where the lining is different in...

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Digestive System Pre-Lab Colin Van Es Biol 1201 AA Tuesday, November 27, 2007 Prior to reviewing the assigned website (Fundamental Physiology and Anatomy of the Digestive System), I new a decent amount about the topic. I knew that the Digestive System is responsible for the breakdown of foods and absorption of nutrients into the blood. This gives out cells the energy they need to survive and grow. The system extends from the mouth to the anus, where waste is released from the body. I also knew that some of the organs involved are the esophagus, stomach, small and large intestines. There are some organs that are involved though they never directly touch the food. They release enzymes into the stomach to aid in the digestion of tougher nutrients such as fats. Some new things I learned after reviewing the assigned website (Fundamental Physiology and Anatomy of the Digestive System) are: 1) the wall of the digestive tract is made of 4 layers or tunics (serosa, muscularis, submucosa, and mucosa), 2) the mucosa is
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Unformatted text preview: where the lining is different in each organ depending on the function of that organ, 3) there is a vast array of microbial life in the digestive system, the specifics of which vary depending on the persons diet, age and state of health, 4) one person carries about 500 bacteria or so and 5) the most important process in the digestive system is hydrolysis, or breaking down a chemical bond by adding a water molecule. In this lab I will be observing the digestive tracts of various animals including a shark, pig and rat. I expect to observe the tunics of the tract and to compare the different linings of the different organs. I will identify the various parts of the digestive tract and compare them to my knowledge of the human digestive system to discover the similarities and differences. Fundamental Physiology and Anatomy of the Digestive System. 27 Nov 2007. <http://arbl.cvmbs.colostate.edu/hbooks/pathphys/digestion/basics/index.html>...
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Digestive System Pre Lab - where the lining is different in...

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