Your guide to Human Anatomy guide (comment)

In this reading, I comprehended more about the important of cardiovascular system; specially about the vessels blood.



The arteries are the responsible of carry the blood full of nutriments from the heart to all parts of the body. the arteries are thick-walled tubes and these divide into smaller arterioles and then into even smaller capillaries, (the smallest of all blood vessels).
The capillaries join together to form small veins and these join together to form others big veins. the veins are of walls thin, because the blood has lost the pressure which forced it out of the heart; the bloods into the veins is deoxygenated and the flow is slow and goes back to the heart.