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The functions of saliva include


A) moistening, binding, and building up food particles; beginning chemical digestion of carbohydrates; and cleansing the esophagus.
B) moistening, binding, and dissolving food particles; beginning chemical digestion of proteins; and cleansing the esophagus.
C) moistening, binding, and building up food particles; beginning mechanical digestion of fats; and cleansing the teeth and mouth.
D) moistening, binding, and dissolving food particles; beginning chemical digestion of carbohydrates; and cleansing the teeth and mouth.

E) C) and D)
F) All of the above

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Feces contain


A) electrolytes.
B) undigested food.
C) bacteria.
D) all of the above.

E) B) and D)
F) B) and C)

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The passageway through the digestive tube is called the _____.

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Feces are about ____ percent water.


A) 25
B) 33
C) 50
D) 75

E) A) and C)
F) B) and C)

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The epiglottis is attached to the


A) esophagus.
B) trachea.
C) pharynx.
D) larynx.

E) C) and D)
F) A) and B)

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Tanisha has abdominal pains. Medical tests reveal that she can digest nutrients, but the nutrients are not taken in by the intestinal blood supply. She likely has


A) malnutrition.
B) malabsorption.
C) constipation.
D) food allergy.

E) B) and D)
F) A) and D)

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The epithelial cells that form the inner lining of the small intestine


A) are replaced every few days.
B) are not able to reproduce.
C) are cube-shaped.
D) remain where they are first formed.

E) B) and D)
F) None of the above

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Lymph transports fat molecules with longer chains of carbon atoms away from the intestine.

A) True
B) False

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The enterogastric reflex begins in the stomach and ends in the small intestine.

A) True
B) False

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Bile salts function like detergents in that they ___________ fat globules.


A) emulsify
B) coagulate
C) digest
D) liquefy

E) C) and D)
F) All of the above

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An X-rays series of the bile ducts is called a


A) cholangiogram.
B) cholecystogram.
C) cholecystectomy.
D) cholelithiasis.

E) A) and D)
F) None of the above

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The hormone secretin


A) converts trypsinogen to trypsin.
B) activates chymotrypsin.
C) stimulates release of pancreatic juice.
D) inhibits the action of pancreatic lipase.

E) A) and C)
F) B) and C)

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Secretion of cholecystokinin from the intestinal wall is stimulated by


A) protein in the stomach.
B) protein in the small intestine.
C) fat in the stomach.
D) protein and fat in the small intestine.

E) A) and D)
F) B) and C)

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Functions of the liver include


A) maintaining blood glucose concentration.
B) formation of urea.
C) secretion of bile.
D) all of the above.

E) None of the above
F) B) and C)

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Bile salts aid the absorption of _________ vitamins.

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Intrinsic factor is necessary for the normal absorption of ______ ______ from the small intestine.

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Pancreatic acinar cells secrete pancreatic juice.

A) True
B) False

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The sphincter muscle located between the small intestine and the large intestine is the ______ ______.

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The major mixing movement in the small intestine is accomplished by


A) peristalsis.
B) churning.
C) segmentation.
D) ring contractions.

E) None of the above
F) All of the above

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The organs of the alimentary canal are innervated by sympathetic as well as by parasympathetic nerve fibers.

A) True
B) False

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