What are the three main parts of the circulatory system?

• Heart, lungs, and brain

• Heart, blood vessels, and blood

• Blood, veins, and arteries

• Lungs, heart, and stomach

Which component of blood helps in clotting?

• Plasma

• Red blood cells

• Platelets

• White blood cells

What is the function of the heart in the circulatory system?

• To digest food

• To pump blood throughout the body

• To filter waste

• To produce hormones

How many chambers does the heart have?

• Two

• Three

• Four

• Five

What is the role of the diaphragm in breathing?

• It filters air

• It contracts and moves downward to allow air in

• It pumps blood

• It digests food

Which blood vessels carry blood away from the heart?

• Veins

• Arteries

• Capillaries

• Lymph vessels

What is the function of red blood cells?

• Fight infections

• Carry oxygen

• Help blood clot

• Transport nutrients

Which part of the heart pumps blood to the lungs?

• Left atrium

• Right atrium

• Right ventricle

• Left ventricle

What is the role of white blood cells?

• Carry oxygen

• Fight infections

• Help blood clot

• Transport nutrients

What is another name for the circulatory system?

• Respiratory system

• Cardiovascular system

• Digestive system

• Nervous system