Venous blood is under very little pressure, so the valves prevent the blood from flowing the wrong way. Arterial blood is under pressure from the heart, so it does not need valves.
Viens carry blood away from the heart while veins carry blood towardj the heart. Arteries are generally thicker than veins because arteries must withstand the pressure of the blood coming away from the heart.
No arteries have valves, only veins have valves to stop backflow.
Circulate the blood. composed of the heart, arteries and viens.
they both send blood to the body
It has arteries,viens, and capillaries
No, veins have the valves, arteries don't.
arteries send blood to the rest of the body, from the heart; viens send it back to the heart from the body.
Of course. They may not be as red as red cells are in arteries . . .
Pulmonary veins. Arteries lead away from the heart.
No, veins have the valves, arteries don't.
they both travel in viens and arteries
valves