What takes blood away from the heart?

• Arteries
• Veins
• Capillaries
• Lungs

Which part of the human body is primarily responsible for oxygen exchange?

• Heart

• Lungs

• Liver

• Kidneys

Blood moves from arteries to veins through tiny blood vessels called ?

• Arteries

• Capillaries

• Nerves

• Vena Cava

Red blood cells are produced by the

• liver
• heart
• bone marrow
• pancreas

What is the function of the platelets?

• Stop bleeding by clumping and clotting
• fight infection
• carry oxygen and carbon dioxide
• circulate blood cells

What is the primary function of the red blood cells?

• To fight infection

• To clot blood

• To carry oxygen

• To remove waste

What is the main organ of the circulatory system?

• Liver

• Heart

• Kidney

• Lungs

Which type of blood vessel carries blood away from the heart?

• Vein

• Artery

• Capillary

• Valve

The main function of the circulatory system is 

• To give the body structure and support
• Excrete waste
• transport blood, nutrients, and gases throughout the body
• to transport messages from the body to the brain

Key words for circulatory system:

• lungs, oxygen

• blood, transport

• brain, response

• kidneys, filter