Exam 40: Digestion and Absorption

The enterogastric reflex stimulates gastric motility as food enters the duodenum.

The process of emptying the stomach takes about 12 hours after a meal.

Chemical digestion can be defined as all of the changes in chemical composition that food undergoes as it travels through the digestive tract.

Enzymes are pH sensitive because differences in the hydrogen ion concentration can affect the shape of the protein molecule.

Chylomicrons are formed in the epithelial cells lining the small intestine.

Which phase(s) of gastric secretion is(are) stimulated by the sight, taste, and smell of food?

The process of swallowing is known as:

The purpose of peristalsis is to:

Which monosaccharide is found in all three of the most common disaccharides?

Match each structure with its function, description, or the enzyme it produces. -Gland that makes and secretes bile

Which of the following is a true statement?

The major site for the absorption of the end products of digestion is the:

The hormone vasoactive intestinal peptide is released when hydrochloric acid and digested food products are in the small intestine.

Enterokinase is converted to trypsinogen by trypsin.

The primary function of the digestive system is to bring essential nutrients into the internal environment so that they are available to the cells of the body.

Enzymes are usually defined as inorganic catalysts.

Oral rehydration therapy can be used to replace fluids lost by way of diarrhea.

Which step of deglutition is under voluntary control?

When classified according to the kind of chemical reactions catalyzed, digestive enzymes are referred to as _____ enzymes.

Peristalsis and segmentation both involve movement of the GI tract.