51) All of the following structures have all four tissue layers in their walls
except
the
A) esophagus.
B) mouth.
C) stomach.
D) sigmoid colon.
52) The portion of the large intestine closest to the liver is the
A) cecum.
B) rectum.
C) transverse colon.
D) descending colon.
53) Digestion of which of the following would be affected the most if the bile-secreting liver were severely damaged?
A) carbohydrates
B) lipids
C) proteins
D) nucleic acids
54) The duodenum contains these structures whose products neutralize the acidic chyme.
A) duodenal glands
B) gastric glands
C) intestinal glands
D) Peyer's patches
55) Which of the following statements about the duodenum is
false?
A) It receives chyme from the stomach.
B) It is the site of action of liver and pancreas secretions.
C) It is shorter than either the ileum or jejunum.
D) It is more movable than the ileum or jejunum, which are retroperitoneal.
56) Which of the following layers is present in the mucosa of the stomach and intestines, but
not
in the mucosa of the mouth and pharynx?
A) lining epithelium
B) lamina propria
C) muscularis mucosae
D) lumen
57) The "mostly mucous" extrinsic salivary gland is the ________ gland.
A) parotid
B) submandibular
C) sublingual
D) intrinsic
58) Which of the following are the only mucosal folds that do
not
flatten out at all when the organ stretches?
A) longitudinal folds in the esophagus
B) rugae in the stomach
C) circular folds in the small intestine
D) mucosal folds in the gallbladder
59) The bare area of the liver
A) contains the ligamentum teres.
B) is covered with visceral peritoneum.
C) is fused with the diaphragm.
D) is on the liver's inferior and anterior surface.
60) The epithelial lining of the mouth derives from
A) ectoderm.
B) mesoderm.
C) endoderm.
D) neural crest.