Exam 40: Digestion and Absorption

Mastication is another word for chewing.

The main glucose-digesting enzyme is glucase.

Explain the physiological basis for diarrhea and constipation.

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

Match each of the digestive juices and enzymes with its corresponding description. -Converts maltose to glucose

Nucleotidase digests nucleotides.

Peristalsis and segmentation both involve movement of the GI tract.

The process of emulsification is important because it facilitates a greater contact area for the digestion of fat.

In the pancreas, base is secreted into the GI lumen and acid is secreted into the blood. This is the reverse of what happens in the stomach.

The process of emulsification is important in the digestion of:

Explain why salivary amylase is able to digest such a small amount of carbohydrate.

Match each phase of gastric secretion with its corresponding statement or definition. -Phase that is initiated by the presence of food in the stomach

Which of the following protein-digesting enzymes is made in the stomach?

The process of elimination is simply the expulsion of the residues of digestion from the digestive tract.

Explain how the hepatic portal system and liver help maintain the blood homeostasis.

To increase absorption time, the hormone cholecystokinin slows motility in the small intestine.

Match each of the digestive juices and enzymes with its corresponding description. -Enzyme that works on starch

Glycogen and sucrose are examples of polysaccharides.

Which blood vessel carries absorbed food from the GI tract to the liver?

Match each of the digestive juices and enzymes with its corresponding description. -Pancreatic enzyme that works on proteins