Digestion
This is a picture of the GI track. It start with the mouth, teeth chew and the saliva is used in digesting and the tongue allows you to swallow. Air is blocked off while swallowing, Food enters the esophagus and peristalsis begins. The esophagus moves food to the stomach. The stomach expands and the food is stored. The duodenum of the small intestine receives bile from the liver and pancreatic juice from the pancreas. Bile emulsifies fat and readies it for for digestion by lipase. The pancreas produces enzymes that digest starch, protein and fat. The intestinal enzymes finish the process of chemical digestion. Small nutrient molecules are absorbed at the villi in the walls of the small intestine. The pancreas produces pancreatic juice. The liver produces bile, destroys old blood cells, stores iron and store glucose. the liver produces bile and the gallbladder stores it. the large intestine consists of the cecum, the colon, and the rectum which end up and the anus. The large intestine absorbs water, salts, and some vitamins.
Nutrients
We should be provided with good energy after our food has digested completly. Obesity is on the rise due to people not eating correctly. This is a big issue. Carbohydrates are necessary in any diet but only so many should be consumed in a day.
The food pyramid is a great tool to use:
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