chapter21 The Digestive System

chapter21 The Digestive System - Exam Name MULTIPLE CHOICE...

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Mechanical digestion refers to A) the progressive dehydration of indigestible residue. B) the input of food into the digestive tract. C) the enzymatic breakdown of food. D) the absorption of nutrients in the gut. E) the effects of chewing, churning, and segmentation. 2) Which function(s) is/are NOT continuously regulated by the GI tract? A) absorption B) motility C) secretion D) All of the above are regulated. E) None of the above are regulated. 3) Which of the following is an accessory organ of digestion? 4) The __________ is a significant site of absorption of water and electrolytes, but NOT of nutrients. 5) Which of the following is the sequence of layers from the lumen to the outer wall of the digestive tract? 6) The lamina propria and mucous epithelium are components of the A) serosa. B) adventitia. C) muscularis mucosa. D) mucosa. E) submucosa. 1
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