Digestive System Quiz

Which part of the alimentary canal is responsible for breaking down food into nutrients?

• Mouth

• Esophagus

• Stomach

• Small intestine

What is the role of saliva in digestion?

• Moistens food

• Breaks down carbohydrates

• Kills harmful bacteria

• Absorbs nutrients

Which organ produces bile?

• Liver

• Pancreas

• Gallbladder

• Stomach

Where does most digestion and nutrient absorption occur?

• Mouth

• Stomach

• Small intestine

• Large intestine

What is the function of villi in the small intestine?

• Increase surface area for nutrient absorption

• Produce digestive enzymes

• Store bile

• Absorb water

What is the end product of carbohydrate digestion?

• Glucose

• Amino acids

• Fatty acids

• Glycerol

Which organ releases digestive enzymes into the small intestine?

• Liver

• Pancreas

• Gallbladder

• Stomach

Where does absorption of digested food take place?

• Mouth

• Stomach

• Small intestine

• Large intestine

What is the function of the liver in digestion?

• Produces bile

• Releases digestive enzymes

• Stores and releases bile

• Absorbs nutrients

What is the process called when undigested food is discharged from the body?

• Ingestion

• Digestion

• Absorption

• Egestion