Digestive System Quiz

What is the main function of the digestive system?

• To circulate blood

• To break down food into nutrients

• To produce hormones

• To filter waste from the blood

Tags

NGSS.MS-LS1-7

Which type of digestion involves chewing or muscle contractions?

• Chemical digestion

• Mechanical digestion

• Enzymatic digestion

• Absorptive digestion

Where does mechanical digestion occur in the body?

• Liver

• Heart

• Mouth and stomach

• Small intestine

What breaks down food in chemical digestion?

• Teeth

• Muscles

• Enzymes or acids

• Blood cells

Where does chemical digestion begin in the body?

• Stomach

• Mouth

• Liver

• Large intestine

What role does saliva play in digestion?

• It filters waste

• It breaks down carbohydrates

• It absorbs nutrients

• It circulates blood

What do gastric juices in the stomach break down?

• Fats

• Carbohydrates

• Proteins

• Vitamins

Which organ uses enzymes from the pancreas and bile from the liver?

• Stomach

• Small intestine

• Mouth

• Large intestine

Tags

NGSS.MS-LS1-7

What is the first step in the digestive process?

• Absorption in the small intestine

• Chewing in the mouth

• Digestion in the stomach

• Elimination in the large intestine

What happens in the mouth during mechanical digestion?

• Saliva breaks down proteins

• Teeth chew food into smaller pieces

• Enzymes digest fats

• Bile emulsifies fats