41) Why are bacteria abundant in the large intestines but
not
in the stomach?
A) Food enters the stomach first and does not spend much time there.
B) The intestine is much warmer and moister, encouraging bacterial growth.
C) The stomach wall contains so much lymphoid tissue that it destroys all bacteria there.
D) Secretions of parietal cells kill bacteria in the stomach.
42) The stomach
A) stores food for later use in the form of fat.
B) absorbs most of the nutrients in food.
C) churns food into a paste by mechanical means.
D) dehydrates food materials before passing them to the small intestine.
43) Which of the following correctly describes the function of the greater omentum?
A) It is a vestigial structure that has no known function.
B) It stores fat.
C) It absorbs heat from the digestive process and radiates it to the outside of the body.
D) It wraps around most of the large intestine and anchors it to the anterior abdominal wall.
44) Which of the following is a secondarily retroperitoneal organ?
A) descending colon
B) ileum
C) sigmoid colon
D) transverse colon
45) What is the function of the gallbladder?
A) secretion of bile
B) production of cholesterol
C) secretion of gastrin
D) storage of bile
46) The pancreas contains all of the following regions
except
a
A) head.
B) tail.
C) hilum.
D) body.
47) The largest salivary gland is the
A) intrinsic.
B) submandibular.
C) sublingual.
D) parotid.
48) Which of the following cells produce intrinsic factor?
A) chief cells
B) parietal cells
C) mucous neck cells
D) enteroendocrine cells
49) Which of the following is
not
a function of hepatocytes?
A) producing digestive enzymes
B) picking up and processing nutrients from the portal blood
C) storing some vitamins
D) detoxifying poisons
50) Which of the following applies to the small intestine?
A) It is where foodstuffs first encounter protein-splitting enzymes.
B) Its walls secrete most of the digestive enzymes that are active in its lumen.
C) It is where carbohydrates and fats but not proteins are digested.
D) Breakdown products of fats enter its lacteals.