because you have main arteries that blood flows through to help pump the heart. Veins carry the blood through
Arteries carry blood to the heart and veins carry blood away from the heart
blood pressure in veins pump through the body but blood pressure in arteries pump throught he heart.
i think its the veins or it might be the arteries
Heart, arteries, veins, and capallaries.Heart,arteries and veins...
Vascular tissues allow for the transport of blood. The vascular system includes the veins, arteries, and capillaries.
because the veins collects the deoxygenated blood.
Capillaries differ from veins and arteries in that they are smaller in diameter.
Lymphatic vessels are more like veins than arteries in both structure and function.
A human
Arteries carry blood to the heart and veins carry blood away from the heart
Capillaries are the structures that connect arteries to veins.
veins go to heart, arteries go away from heart
For the most part, arteries carry oxygenated blood and veins carry de-oxygenated blood. This is opposite in the pulmonary veins and arteries because they are going to and from the lungs to get oxygen.
the atries has no vavle ,thick walls and carries blood away from the heart whereas the veins has valve and carries blood to the heart and has thin walls
Arteries carry blood away from the heart, where as veins carry blood to the heart.
Arteries have thicker walls than veins because they are carrying blood away from the heart and so, in a sense, are working harder. Veins have thinner walls and contain valves to stop blood flowing backwards.
In the circulatory system, veins (from the Latin vena) are blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. Veins differ from arteries in structure and function; for example, arteries are more muscular than veins and they carry blood away from the heart.