Bill Nye Heart and Circulation

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

• To pump blood throughout the body

• To produce oxygen

• To digest food

• To filter blood

What type of blood vessel is primarily responsible for direct contact with body cells?

• Capillary

• Artery

• Aorta

• Vein

How can you observe your pulse using simple materials?

• Using a stethoscope

• Using a straw and bottle cap

• Using a thermometer

• Using a blood pressure cuff

What happens to your blood flow when you stand up quickly from a lying position?

• It may not keep up with your brain's needs

• It remains the same

• It stops

• It decreases

Why is it important to maintain a healthy heart?

• To improve brain function

• To keep blood moving efficiently

• To increase bone density

• To enhance vision