small intestine actually, the first step happens when the food is in the mouth and the saliva is breaking down the food.
http://wiki.answers.com/Q/What_is_the_first_step_in_che...
・ Digestion is accomplished by both mechanical and chemical means. While the two methods of digestion are... ・ Both mechanical and chemical digestion begin to break down food when it enters the mouth. The grinding... ・ After the food is swa...
http://www.ehow.com/how-does_5498919_mechanical-chemica...
So that they can be absorbed. Fats (like triglycerides), starch and proteins are all large molecules made of repeating subunits, too big to be absorbed into the blood without chopping them up with chemicals such as enzymes and stomach aci...
http://answers.yahoo.com/question/index?qid=20080219235...
Mechanical digestion occurs in two places through the gut. First, in the mouth and then in the stomach. When we bite off our food and chew it, we are mechanically digesting it. This is because chewing breaks down food into smaller pieces. I...
http://www.blurtit.com/q529086.html
Chemical digestion begins in your mouth. The chemical that begins the process are chemicals in saliva, which comes from the salivary glands. You can find more information here: http://en.wikipedia.org/wiki/Digestion
http://answers.ask.com/Health/Diseases/where_does_chemi...
Most chemical digestion in the human body takes place in the small intestine.
http://www.blurtit.com/q3999171.html
Breaking down food into simpler forms is called digestion Digestion is both mechanical and chemical . In mechanical digestion , food is physically broken down into smaller particles by processes such as chewing. Chemical digestion make Dige...
http://www.tutorvista.com/search/where-does-chemical-di...