Exam 15: The Digestive System

Indicate the site, labelled a. through e., at which digestion of each of the three main categories of foodstuffs commences and is completed. (Options may be used more than once or not at all.) -protein digestion begins

Match the digestive enzymes, labelled a. through d., with their correct characteristics. -only enzyme for fat digestion

Match the hormones, labelled a. through e., with the actions listed. -relaxes the ileocecal sphincter

Bile salts are important in fat digestion and absorption.

The ____________________ is the longest segment of the small intestine.

Match the digestive secretions, labelled a. through e., to the descriptions. (Options may be used more than once or not at all.) -recycled many times through the enterohepatic circulation

Gastric secretion occurs only when food is present in the stomach.

Which of these breakfasts would remain in the stomach the longest

Colonic secretion contains no digestive enzymes.

Which of these actions is NOT performed by the liver

Which of these statements does NOT describe pancreatic enzymes

Chylomicrons are large, coated droplets of ____________________.

Which of these statements does NOT apply to the formation of a lipid emulsion

Which of these conditions is NOT a side effect of constipation

Lipase breaks down proteins via hydrolysis.

Which of these organs is NOT a digestive tract organ

H⁺ ions are actively secreted against a large concentration gradient into the stomach; Cl^- secretion follows passively.

Match the descriptions, labelled a. through l., with the items listed. -cholecystokinin

The rate of gastric emptying depends entirely on the volume and fluidity of gastric contents.

Which of these substances is absorbed by the stomach