the circulatory system

the circulatory system carries oxygen, nutrients, and hormones to cells and removes waste products like carbon dioxide.​

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arteries carry blood away from the heart and veins carry blood back to the heart. the four main parts of the circulatory system are: the heart, arteries, veins and blood​

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​arteries and veins

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the heart is a pump, usually beating about 60 to 100 times per minute. with each heartbeat, the heart sends blood throughout our bodies​.

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​the heart

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carrying oxygen to every cell. after delivering the oxygen, the blood returns to the heart. the heart then sends the blood back to the lungs to pick up more oxygen. this cycle repeats over and over again.​

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blood is needed to keep us alive. it brings oxygen and nutrients to all parts of the body​ so they can keep up working.

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​the blood

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blood carries carbon dioxide and other waste materials to the lungs, kidneys and digestive system to be removed from the body. blood also fights infection and has hormones around the body​.

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the heart is divided into 4 chambers. the two upper chambers are called atriums. a partition separates the ventricles right side of the soul from the left side. this prevents the blood on the left and right sections from mixing. this is important because the left side of the heart has oxygenated blood while the right side has deoxygenated blood.

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