1)Which Two Sphincters Are Under Voluntary Control?

** GI + liver samples

1)Which two sphincters are under voluntary control?

a)upper esophageal and lower esophageal

b)lower esophageal and hepatopancreatic

c)pyloric and ileocecal

d)internal anal and external anal

e)external anal and upper esophageal

2)Which of the following best describes peristalsis:

a)circular muscle contracts behind a bolus; longitudinal muscle contracts around the bolus; the bolus is moved forward

b)circular muscle contracts behind and in front of a bolus; longitudinal muscle contracts around the bolus; the bolus is compacted

c)longitudinal muscle contracts behind a bolus; circular muscle contracts around the bolus; the bolus is moved forward

d)longitudinal muscle contracts behind and in front of a bolus; circular muscle contracts around the bolus; the bolus is compacted

e)circular muscle contracts in front of a bolus; longitudinal muscle contracts around the bolus; the bolus is moved backward

3)Which of the following is NOT secreted by the pancreas?

a)peptidases

b)trypsinogen

c)sucrose

d)insulin

e)amylases

4)Which of the following would relax the sphincter of Oddi (hepatopancreatic sphincter)?

a)gastrin

b)cholecystokinin (CCK)

c)intrinsic factor

d)secretin

e)soft music

5)Which of the following is NOT an actual difference between the small and large intestine?

a)the large intestine has intestinal crypts while the small intestine does not

b)the small intestine has plicae circularis while the large does not

c)the large intestine contains bacterial species that the small intestine does not

d)the small intestine is lined with villi while the large is not

e)the large intestine has haustra while the small intestine does not

6)Which of the following is absorbed by the central lacteal?

a)chylomicrons

b)free fatty acids

c)micelles

d)monoglycerides

e)triglycerides

7)Identify all the structures in the following diagram and describe their function.