Exam 40: Digestion and Absorption

Match each of the digestive juices and enzymes with its corresponding description. -Enzyme that chemically digests fat

The hormone that stimulates the gallbladder to release bile is:

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

Secretin causes the production of pancreatic fluid high in enzyme content but low in bicarbonate.

Some of the enzymes in pancreatic juice are inactive.

What substances are found in pancreatic juice? How are the inactive substances in pancreatic juice activated?

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

The main glucose-digesting enzyme is glucase.

The stimulation of gastric juice secretions occurs in five phases controlled by reflex and chemical mechanisms.

Because trypsin works in the small intestine, its optimal pH must be less than that of pepsin, which works in the stomach.

The enterogastric reflex causes:

Explain the process of fat digestion.

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

Which of the processes of mechanical digestion involves the esophagus?

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

Some drugs cannot be taken orally even if they are well absorbed by the small intestine because they are completely broken down by the liver. Explain why these drugs would never reach the general circulation.

Match each of the digestive juices and enzymes with its corresponding description. -Enzyme from lining of small intestine whose end products are amino acids

Colipase is a substance made by the small intestine, and it functions as a coenzyme in fat digestion.

Match each primary mechanism of the digestive system with its corresponding definition. -A group of processes that breaks complex nutrients into simpler ones, thus facilitating their absorption (includes both mechanical and chemical processes)

Explain the process of carbohydrate digestion.