through these, blood enters and leaves the heart; these carries that blood throughout the body; pathways or closed transport system of blood which food and oxygen to all parts of the body. these are made up of the arteries, the capillaries and the veins.
thick-walled blood vessels that carry blood away from the heart.
the largest artery leading from the left ventricle
the push of blood against the walls of the blood vessels
the smallest blood vessels in the body which connect an artery to a vein. these blood vessels supply the cells with food and oxygen.
blood vessels that carry blood back to the heart.
parts of veins that act like doors; these keep the blood from flowing backward, as blood only flows in one direction in the veins.