23. Digestive System

Mark the following statements as true or false. If a statement is false, correct it to make a true statement.

d. The exocrine cells of the pancreas and salivary glands are islet cells.

Which of the following best describes the microscopic structure of the liver?

a. Hexagonal plates of hepatocytes surrounding a central vein with portal triads at each corner

b. Octagonal plates of hepatocytes surrounding a central artery with portal triads at each corner

c. Irregular groups of hepatocytes surrounding a central vein with bile ducts at each corner

d. Hexagonal plates of hepatocytes surrounding a portal vein with bile ducts at each corner

Which of the following best describes the role of bile salts in lipid digestion?

a. Bile salts begin chemical digestion of lipids.

b. Bile salts bind to lipids and physically break them apart into monoglycerides and free fatty acids.

c. Bile salts bind to lipids and physically break them apart into smaller pieces.

d. Bile salts interact with pancreatic lipase and catalyze lipid breakdown.

The primary hormone that triggers the secretion of pancreatic juice and bile is:

a. gastric inhibitory peptide.

b. cholecystokinin.

c. motilin.

d. somatostatin.

Fill in the blanks: Lipids associate with bile salts in the small intestine to form_____ . In the enterocyte, lipids are packaged with other lipids into______.

The common hepatic duct and main pancreatic duct enter into the:

a. pyloric sphincter.

b. duodenum.

c. ileum.

d. cecum.