exam 2

Distention of the stomach has a direct stimulatory effect on the gastric glands.

False

Which of the following hormones does not inhibit gastric gland secretions?

gastrin

The hormone ______ stimulates secretion of _______ in the stomach.

gastrin ; pepsin

Cholecystokinin, which is produced in the small intestine, inhibits gastric secretions in the stomach.

True

Gastrin functions to increase the production of HCl in the stomach.

True

Secretin is released from the duodenum in response to acidic chyme.

True

Secretin is released from the duodenum in response to

hydrochloric acid in chyme.

Which of the following enzymes is produced by the stomach?

pepsin

Which of the following does NOT stimulate the secretion of HCl in the stomach?

secretin

The medulla oblongata controls gastric secretion both by the parasympathetic branch of the nervous system and the endocrine system.

False

When chyme enters the duodenum, gastric secretion increases.

False

Which of the following does not occur during the gastric phase of gastric secretion? All of the choices are correct.

Gastrin begins to be secreted by the lower part of the stomach. Hydrochloric acid and pepsin secretion is stimulated in the upper and middle parts of the stomach. Tactile sensation of food in the mouth sends nervous impulses to the medulla oblongata.

________stimulation via the ________ nerve causes the secretion of HCl in the stomach.

Parasympathetic ; vagus

Gastric secretion begins during the ________ phase and ends during the ________ phase.

cephalic ; intestinal

Which of the following inhibits the secretion of the gastric glands?

duodenum pH of less than two