Exam 40: Digestion and Absorption

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

Which of the following is not a stage in deglutition?

The parietal cells of the stomach do not produce which of the following?

The enzymes amylase and lipase are found in saliva and are equally effective in their digestion of substrates.

Explain why trypsin and pepsin need to be made in an inactive form.

Contact digestion occurs in which location in the digestive system?

Explain the process of carbohydrate digestion.

Match each structure with its function, description, or the enzyme it produces. -Structure in which villi are located

Chylomicrons are usually not found in the lumen of the small intestine.

Micelles contain mostly triglycerides.

Explain the process of protein digestion.

Match each primary mechanism of the digestive system with its corresponding definition. -Movement by the muscular components of the digestive tube, including processes of mechanical digestion; examples include peristalsis and segmentation

Diarrhea occurs when the contents of the lower colon and rectum move at a rate that is slower than normal.

Which of the following is not true of segmentation?

Explain the mechanism of absorption for lipids.

The nutrients absorbed by the lacteals enter the blood by being dumped into the subclavian veins.

The sodium cotransport or coupled transport acts to transport sodium ions and glucose molecules _____ the GI lumen.

A small amount of ingested alcohol is absorbed by the stomach.

The blood surrounding the stomach would have a pH slightly higher than blood in other parts of the body.

Because enzymes are not changed by the chemical reactions they catalyze, digestive enzymes rarely need to be made.