Part 1 of Essay
The BIG MAC is placed in the mouth. The bread is mainly starch, the special sauce is mainly fat, lettuce, pickles, and onions are niacin. The beef patties are protein,and cheeseis a form of calcium, fat, and protein. The piece of the BIG MAC is placed in the mouth and chewed, the starch is being digested by saliva. The st ....

Part 2 of Essay
.... moves food out of the stomach and into the small intestine. The lever contributes to this digestive process by secreting into the small intestine, a liquid called bile. The pancreas secretes pancreatic juice which further aids in dissolving food. The small intestine undergoes continual muscular contractions called peristalses. This action pushes food into the large intestine. This surface of the small intestine has a large number of threadlike projections called villi. The digested, liquified food ....