Circulatoryics19gratjo

The circulatory system is a body system that helps blood flow throughout the body. Arteries are blood vessels that take blood away from your heart to other organs. The arteries to from the heart to lungs are realy important. They are important because blood has oxygen in it, so the blood flow going to your lung is is important because that's what makes you breath. Veins are blood vessels taking blood to your heart.

Why is the blood coming back to the heart? Because that regular blood has oxygen that's what makes that blood bright red. The veins however are bringing blood back to the heart so that blood could get more oxygen. That's why veins appear purple or bluish. Capillaries are the smallest of the blood vessels. They transfer the oxygen and other nutrients to other parts of the body. They also collect carbon dioxide and other waste and give it to the veins.

The heart has valves why. Well the heart valves block incoming blood trying to go back in. "Think of it like a sponge, when you squeeze a sponge the water comes out everywhere, when the heart pumps what happens the blood goes down" -Mr.Paczynski. Also the circulatory system helps cool down your body. Like when you get hot you turn red because your blood is touching your skin colling you down same thing when your cold blood stays in warming you.