CBIO 2200 Midterm: digestive system study guide

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13 Oct 2021
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Label this diagram: *see sheet, compare and contrast mechanical and chemical digestion. Mechanical digestion happens mostly in the mouth and stomach and involves physical movement. Chemical digestion occurs in the mouth, stomach, and small intestines. The alimentary canal a 9m long muscular tube that passes through the ventral cavity, and the lumen is the hole in the tube that food travels through. The four layers are mucosa, submucosa, musclaris externa, and serosa. Stomach is a j-shaped, pouchlike organ that hangs under the diaphragm. *rugae: folds of mucosal tissue allow for expansion! Pyloric region- narrowing, ends with pyloric sphincter- a powerful muscle valve that controls gastric emptying. And it also has cholesterol and electrolytes: describe each of these homeostatic imbalances, including where they can occur, ulcers: sores in the lining of the alimentary canal. Why is fiber important: macronutrients: include, carbohydrates: simple carbs ( simple sugars ): glucose and fructose (candy, fruits).

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