Lacteals
A. are found only in the large intestine.
B. absorb the products of fat digestion.
C. secrete intestinal juice.
D. connect directly to the liver.
E. All of the choices are correct.
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Question 2) Which is not found in the wall of the large intestine?
A. Goblet cells
B. Simple columnar epithelium
C. Lymphatic nodules
D. Villi
E. Intestinal glands
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Question 3) Which region of the digestive tract moves material by peristalsis, haustral churning, and mass movement?
A. Large intestine
B. Small intestine
C. Stomach
D. Esophagus
E. Pharynx
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Question 4) What is the primary function of the large intestine?
A. Storage of vitamins and minerals
B. Protein digestion and nutrient absorption
C. Water and electrolyte absorption
D. Secretion of water, salts, sodium bicarbonate, and enzymes
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Question 5) Of the three regions of the small intestine, the terminal (end) portion is the _____________.
Fill in the blank with correct word.
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Question 6) Chief cells store and release an inactive precursor of a proteolytic enzyme (rather than the active form) to avoid destroying proteins within themselves.
Indicate whether this statement is true or false.
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Question 7) Duodenal glands (Brunner glands) that secrete a viscous mucus into the small intestine are located in the
A. serosa.
B. adventitia.
C. mucosa.
D. submucosa.
E. muscularis interna.
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Question 8) Villi
A. are found throughout the gastrointestinal tract.
B. generate movement of materials in the large intestine.
C. increase surface area in the small intestine.
D. contain both smooth and skeletal muscle fibers.
E. All of the choices are correct.
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Question 9) Segmentation within the small intestine refers to the
A. propulsion of material between the segments of the GI tract.
B. division of function between the different segments of the small intestine.
C. back-and-forth motion that mixes chyme with glandular secretions.
D. gastroileal reflex that moves materials from the stomach to the large intestine.
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Question 10) The presence of food in the stomach triggers the release of a hormone that stimulates contraction of the pyloric sphincter. Specifically, these events involve release of
A. secretin in the cephalic phase of digestion.
B. gastrin in the gastric phase of digestion.
C. CCK in the intestinal phase of digestion.
D. lipase in the intestinal phase of digestion.
E. chyle in the secretory phase of digestion
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