Digestive, Circulatory and Respiratory System Quiz

What is the main function of the digestive system?

• To pump blood

• To help us breathe

• To break down food

• To move bones

Where does digestion begin?

• Mouth

• Stomach

• Small intestine

• Large intestine

What organ stores food and mixes it with digestive juices?

• Mouth

• Stomach

• Liver

• Heart

Which part of the digestive system absorbs most nutrients?

• Large intestine

• Small intestine

• Esophagus

• Liver

Which organ produces bile to help digest fats?

• Stomach

• Pancreas

• Liver

• Esophagus

What is the long tube that connects the mouth to the stomach?

• Trachea

• Windpipe

• Esophagus

• Intestine

What is the main function of the large intestine?

• Absorb nutrients

• Absorb water

• Digest proteins

• Pump blood

Which of these helps break down food in the mouth?

• Saliva

• Mucus

• Air

• Water

Which organ is NOT part of the digestive system?

• Mouth

• Heart

• Stomach

• Small intestine

What is the main organ of the circulatory system?

• Lungs

• Brain

• Heart

• Kidney