Question

differences between arteries veins and capillaries

Answer 1

Hello !

Arteries:-
<> They have thick walls
<> They  blood from the heart to the parts of the body 
<> All the arteries carry oxygenated blood except the pulmonary artery which carries deoxygenated blood from the heart back to the lungs
<> Arteries do not have valves

Veins :-
<> Veins don't have thick walls , that is , veins have thin walls
<> Veins carry  blood from the  parts of the body  to the heart
<> All the veins carry deoxygenated blood , except , the pulmonary vein which carries oxygenated blood to heart.
<> Veins have valves , to prevent the back flow of blood ,and allows the blood to flow only in 1 direction