Circulatory System

Question 1

White Blood Cells

Answer 1

White blood cells help to fight off illnesses. When you are sick, your body produces more white blood cells to fight off the virus.

Question 2

Veins

Answer 2

Veins carry blood back to the heart to be pumped elsewhere. To avoid any blood going backwards due to a lack of pressure, veins have one-way valves in them.

Question 3

Red Blood Cells

Answer 3

Red Blood Cells carry oxygen from the lungs to all of the cells in the body. Carbon dioxide is is also carried in red blood cells . However, it generally moves from the cells of the body to the lungs.

Question 4

Artery

Answer 4

The arteries are the biggest blood vessel inside the human body they pump oxygenated blood away from the heart.

Question 5

Capillaries

Answer 5

Are the smallest blood vessels that connect the larger blood vessels and they are so thin that you can’t see it with a naked eye