Digestion

How long is the digestive system?

• About 12 meters

• About 6 meters

• About 3 meters

• About 9 meters

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What are the tiny finger-like projections in the small intestine called?

• Papillae

• Microvilli

• Villi

• Cilia

Which vessel in the villi absorbs fatty acids and glycerol?

• Capillary

• Lacteal

• Artery

• Vein

What process allows small molecules to move into the blood?

• Active transport

• Diffusion

• Osmosis

• Filtration

Why do large molecules need to be broken down in the digestive system?

• To pass through the small intestine

• To fit into the stomach

• To be excreted easily

• To be stored in the liver