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chapter 3

Nutrition

QuestionAnswer
Which of the following is a feature of peristalsis? It is caused by alternate tightening and relaxing of circular and longitudinal muscles.
What is an important function of the intestinal villi crypts? Secretion of juices into the small intestine
Which part of the GI tract contains highly acidic digestive juices? Stomach
What is the function of bile? It emulsifies fats
Which substance stimulates the pancreas to release bicarbonate-rich juice? Secretin
When nutrients are transported from intestinal epithelial cells to the vascular system, what organ is first to receive them? Liver
The presence of fat in the intestines stimulates cells of the intestinal wall to release ____. cholecystokinin
What best describes the normal pH of the stomach? Very acidic
When consumed on a regular basis, which food promotes healthful changes in the microflora of the GI tract? Yogurt
Where is the epiglottis located? Throat
Which substance regulates the pH of the stomach? Gastrin
What part of the GI tract prevents a person from choking while swallowing? Epiglottis
The hepatic portal vein empties into the ____. Liver
What is an important function of the intestinal villi crypts? Secretion of juices into the small intestine
The purpose of bicarbonate in the digestive process is to ____. raise the pH of chyme
One function of sphincter muscles is to ____. control the passage of food through the GI tract
One important function of mucus is to ____. protect the stomach walls from digestion
What is the function of mucus in the stomach? It protects stomach cells from gastric juices.
What is the name of the projections on the inner surface of the small intestine? Villi
Which action is associated with the presence of fat in the GI tract? Slowing of the process of digestion and absorption
Which substance functions to control the release of hydrochloric acid to prevent excessive acidity? Gastrin
Created by: Faith98
 

 



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