Exam 16: The Digestive System

The three gastrointestinal hormones that function as enterogastrones are ____________________, ____________________, and ____________________.

Migration of a new intestinal epithelial cell from the crypt at the base of the villus to the tip of the villus requires about three weeks.

Describe how food in the stomach affects other structures in the digestive system.Include information about hormonal and neural reflexes.

Match hormone with action. a.gastrin b.secretin c.CCK d.glucose-dependent insulinotropic peptide e.histamine -Causes gallbladder contraction

Bile is being made continuously by the gallbladder, but the bile is secreted only when food is present in the duodenum..

___________ is the gas that occasionally passes from the anus, and it is derived from swallowed air and gas produced by bacterial fermentation in the colon.

Chyme forms in the stomach, not in the mouth or esophagus.

The rate of gastric emptying is influenced by factors both in the stomach and in the duodenum.

The serosa is the

The pancreatic ____________________ secretion neutralizes acidic gastric contents in the duodenal lumen.

Chewing increases

The typical coloration of the feces is due to

Which statement about the colon is correct?

Protein digestion begins in the stomach under the influence of pepsin; it continues in the duodenal lumen under the influence of pancreatic proteolytic enzymes; and it is completed intracellularly in the small intestinal brush border.

Humans are not capable of digesting cellulose, but some of the enteric bacteria have this capability.

The most potent stimulus for gastrin release is __________________ in the stomach..

Which control mechanism brings about segmentation in the terminal portion of the small intestine?

The primary absorption of nutrients, water, and electrolytes takes place in the large intestine, converting chyme to fecal material.