2. What do absorptive cells do in the small intestine?

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BIOS 256 Week 2 Lower GI

• Bile, which is produced by the and stored in the gall bladder, is used to help emulsify

(digest) .–Answer liver ; lipids (fats)

• What do absorptive cells do in the small intestine?

–Answer digest and absorb nutri- ents

• What do goblet cells secrete in the small intestine?

–Answer mucus

• What do enteroendocrine cells secrete?

–Answer secretin, CCK (cholecystokin), GIP (glucose-dependent insulinotropic peptide)

• What do paneth cells do in the small intestine?

–Answer secrete lysozyme (bactericidal enzyme) and phagocytosis

• Which of the following macromolecules are absorbed in the small intestine using the

lacteals?–Answer lipids and monoglycerides

• Which of the following enzymes would be used to digest proteins?

–Answer Trypsin, peptin, elastase

• Which of the following enzymes are produced by the pancreas?

–Answer pancreatic amylase, trypsin, chymotrypsin 1 / 2

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• Which hormone stimulates the release of digestive enzyme rich pancreatic juice, relaxes the

sphincter of Oddi, slows gastric emptying, promotes feeling of satiety, and causes contraction of the gallbladder?–Answer CCK

• Approximately 90% of all nutrients and water are absorbed in the

.–Answer Small intestine

• is the rhythmic contractions of the muscularis layer starting in the transverse

colon and ending in the rectum/anus pushing food toward the anus for release into the external environment (defecation).–Answer Mass peristalsis

• Which of the following is considered a function of the liver?

-Formation of bile -Balance the chemical make-up of the blood -Oxygenate blood -Mount an immune response against a foreign invader -Detoxify the blood –Answer -Formation of bile -Balance the chemical make-up of the blood -Detoxify the blood

• True or False? The sphincter that regulates the flow of bile and pancreatic enzymes into the

ileum of the small intestine is the Sphincter of Oddi.–Answer False

• Describe the composition of gastric juices.

–Answer Gastric lipase and pepsin

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