The Digestive System

What does 'absorb' mean?

• To take in or soak up a substance

• To release a substance

• To ignore a substance

• To solidify a substance

What is the role of saliva?

• To cool down food

• To change the color of food

• To soften food making it easier to swallow

• To make food dry

How long is the esophagus?

• About 20 inches long

• About 15 inches long

• About 10 inches long

• About 5 inches long

How does food move through the esophagus?

• It doesn't; food skips the esophagus

• Through rapid shaking

• Muscles squeeze and push the food

• By gravity alone

What shape is the stomach compared to?

• The letter S

• The letter J

• The letter O

• The letter L

What helps break down food in the stomach?

• Saliva

• Gastric juices

• Water

• Air

Where are most nutrients absorbed in the digestive system?

• In the stomach

• In the esophagus

• In the small intestine

• In the large intestine

What does the liver do with nutrients?

• Stores them as fat

• Turns them into saliva

• Filters them from the blood

• Sends them to muscles and bones

What is the role of the large intestine?

• To absorb water from waste

• To produce digestive enzymes

• To store undigested food

• To break down proteins