relationship between arteries veins and capillaries
There are three main types of blood vessels: 1  arteries take blood away from the heart to the body organs and tissues. 2  capillaries are tiny, thin-walled vessels which form a network to take blood through the organsand tissues. 3  veins collect blood from the capillaries in the body and return the blood to the heart.rteries, veins and capillaries. There are three main types of blood vessels: 1  arteries take blood away from the heart to the body organs and tissues. 2  The artery wall is thick and muscular so it can withstand the high pressure of the blood being pumped directly from the heart.