Deck 23: Digestive System

Question 1

Why are medications absorbed rapidly when administered sublingually (under the tongue)?

A) Acid in the saliva dissolves the drugs rapidly.
B) Ptyalin from the salivary glands digests the drug, making them absorbable.
C) The rich supply of blood vessels under the tongue absorbs the drug.
D) The warmth of the tongue dissolves the drugs quickly.

Answer 1

The rich supply of blood vessels under the tongue absorbs the drug.

Question 2

The mesentery, omentum, and peritoneal membranes:

A) are located within the alimentary canal.
B) secrete mucus.
C) secrete digestive enzymes.
D) are serous membranes within the abdominal cavity.

Answer 2

are serous membranes within the abdominal cavity.

Question 3

Chyme is:

A) delivered to the liver by the stomach.
B) a pastelike mixture produced by the stomach's grinding muscles.
C) found in the lacteals.
D) formed in the mouth in response to ptyalin.

Answer 3

a pastelike mixture produced by the stomach's grinding muscles.

Question 4

Bile is:

A) synthesized by the gallbladder and stored in the liver.
B) classified as a lipase.
C) synthesized by the pancreas.
D) stored by the gallbladder and released in response to cholecystokinin (CCK).

Question 5

The emulsification of fats is facilitated by:

A) bile.
B) proteolytic enzymes.
C) pepsin.
D) enterokinase.

Question 6

Which of the following is not true of the biliary tree?

A) It includes the hepatic ducts, cystic duct, and common bile duct.
B) It carries bile.
C) It empties bile into the portal vein.
D) It "connects" the liver, gallbladder, and duodenum.

Question 7

An amylase:

A) digests fats.
B) emulsifies fat.
C) digests carbohydrates.
D) assembles amino acids into small peptides.

Question 8

What is the primary function of the large intestine?

A) secretion of potent digestive enzymes
B) absorption of water and electrolytes
C) absorption of digestion byproducts
D) secretion of CCK

Question 9

If the peristalsis in the large intestine slows, then:

A) all waste will be absorbed across the colon wall into the hepatic portal.
B) water absorption across the wall of the colon increases, thereby causing a dry or constipated stool.
C) the person develops diarrhea.
D) bile refluxes into the main pancreatic duct.

Question 10

A paralytic ileus is a:

A) deficiency of digestive enzymes, resulting in malabsorption.
B) cessation of peristalsis.
C) consequence of hyperacidity.
D) major cause of peritonitis.