The small, fingerlike projections into the intestinal lumen are called

The small, fingerlike projections into the intestinal lumen are called
 
  a. villi.
  b. goblets.
  c. lacteals.
  d. polyps.

Q. 2

The hormone that stimulates the gallbladder to contract is:
 
  a. secretin.
  b. cholecystokinin (CCK).
  c. gastrin.
  d. gastric inhibitory polypeptide (GIP).

Q. 3

The substance that acts as an emulsifier and helps absorb digested fat is:
 
  a. bile.
  b. trypsin.
  c. lipase.
  d. cholecystokinin (CCK).

Q. 4

Cholecystokinin (CCK) is produced in the:
 
  a. duodenum.
  b. stomach.
  c. pancreas.
  d. liver.

Q. 5

The stimulus for the release of cholecystokinin (CCK) is the:
 
  a. presence of food in the stomach.
  b. presence of fat in the duodenum.
  c. entry of acid chyme into the ileum.
  d. entry of bile into the gallbladder.

Q. 6

Mucus is produced by the salivary glands and the:
 
  a. intestinal glands.
  b. esophageal glands.
  c. pineal gland.
  d. islets of Langerhans.

Q. 7

The hormone secretin stimulates production of a buffering solution for the duodenum by the:
 
  a. stomach.
  b. liver.
  c. pancreas.
  d. oxyntic cells.

Q. 8

The substance that activates pepsinogen to pepsin is:
 
  a. bile.
  b. gastrin.
  c. secretin.
  d. hydrochloric acid.

Q. 9

The hormone that prevents excessive gastric activity is:
 
  a. gastrin.
  b. enterogastrone.
  c. secretin.
  d. cholecystokinin.

Q. 10

Digestion of protein by pepsin in the stomach requires a pH between:
 
  a. 1.8 and 3.5.
  b. 4.8 and 7.0.
  c. 6.8 and 8.5.
  d. 7.8 and 10.0.