capillary

An artery is a blood vessel that carries blood from the heart to the rest of the body. Capillaries are tiny vessels that carry oxygen and nutrients into our cells.

Capillaries are tiny tubes so thin they can't even be seen with the naked eye. They're like little delivery trucks, bringing important packages to all parts of our bodies. Think about it: every cell in your body needs food, water, and oxygen to work properly, just like how we need food and water to survive. Capillaries help deliver these essential supplies directly into each cell, making sure everything runs smoothly.