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What stomach secretion is necessary for normal hemoglobin production in RBCs?

• intrinsic factor
• HCl
• gastric lipase
• pepsinogen

intrinsic factor

The ducts that deliver bile and pancreatic juice from the liver and pancreas, respectively, unite to form the ________.

• pancreatic acini
• bile canaliculus
• hepatopancreatic ampulla
• portal vein

hepatopancreatic ampulla

Ex.

Also known as the Sphincter of Oddi

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What structural modification of the small intestine slows the movement of chyme through the lumen?

• microvilli
• circular folds
• intestinal crypts
• villi

circular folds

Ex.

The circular folds of the small intestine help slow the progress of food through the intestine so that it can be digested and absorbed more effectively. These folds also increase surface area and help mix chyme.

Which vitamin requires intrinsic factor in order to be absorbed?

• A
• C
• B₁₂
• K

B₁₂

Which of the following constitute a portal triad?

three lobules sharing a common central vein

the porta hepatis

the hepatic artery and two hepatic veins

a bile duct along with a portal venule and arteriole

a bile duct along with a portal venule and arteriole

Ex.

A bile duct along with a portal venule and arteriole constitute a portal triad. The blood vessels provide blood flow to the lobule and the bile duct drains bile.

Which of the following is the primary physiological function of the large intestine?

• nutrient absorption
• mechanical breakdown of food
• primary digestion of food
• water absorption and feces elimination

water absorption and feces elimination

Ex.

Though most water is absorbed in the small intestine, the absorption of most remaining water and the elimination of feces are the primary physiological functions of the large intestine. The large intestine also provides a transport route and a surface for healthful bacteria.

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Paneth cells ________.

• secrete hormones
• secrete bicarbonate ions
• secrete enzymes that kill bacteria
• secrete digestive enzymes

secrete enzymes that kill bacteria

Stellate macrophages are found in the liver and are responsible for removing bacteria and worn-out cells.

• True
• False

True

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