Answer:
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.
