Describe the blood system in a two paragraph essay.

human circulatory system

is also called double circulatory system.

has one heart ... arteris viens and capillaries.

Heart has four chamber ... different animals

. has ... different number of chambers.

Heart. pumps out oxygenated blood through aorta.

Heart functions due to muscular impulse.

Heart is made of muscles.

heart supplies blood to different organs

heart recevies deoxygenated blood from organs.