Small Intestine and Digestion Quiz

What is the primary function of the small intestine?

• To digest food

• To produce digestive enzymes

• To absorb digested food molecules into the blood

• To store food

Which of the following molecules is absorbed from the digestion of starch?

• Glycerol

• Fatty acids

• Amino acids

• Glucose

What are the walls of the small intestine lined with?

• Intestinal villi

• Lacteals

• Blood capillaries

• Microvilli

What is the singular form of 'villi'?

• Villius

• Vill

• Villas

• Villus

How do villi increase the efficiency of absorption in the small intestine?

• By reducing the length of the intestine

• By storing digested food

• By increasing the surface area

• By producing digestive enzymes

What is the length of a flat line between points A and B in the example given?

• 20 centimeters

• 15 centimeters

• 10 centimeters

• 5 centimeters

What is the function of microvilli on epithelial cells?

• To produce enzymes

• To increase surface area

• To transport blood

• To store nutrients

What is the role of blood capillaries in the villi?

• To store digested food

• To produce digestive enzymes

• To provide a good blood supply

• To increase surface area

What is absorbed into the lacteal in each villus?

• Glucose

• Amino acids

• Vitamins

• Fatty acids and glycerol

What happens to the products of lipid digestion after they are absorbed into the lacteal?

• They are excreted

• They eventually reach the bloodstream at a different point

• They are transported to the liver

• They are stored in the villi