CLEAN : London Mayor Sadiq Khan visits devastated London tower block

What is the primary function of the heart?

• To digest food

• To pump blood

• To filter waste

• To produce hormones

What is the main role of the heart in the circulatory system?

• To transport oxygen

• To break down nutrients

• To regulate temperature

• To store energy

Which part of the body is primarily responsible for pumping blood?

• Kidneys

• Heart

• Liver

• Lungs