B3 Blood vessels 0.0 / 5 ? BiologyCells, tissues and organsGCSEAQA Created by: codydavies1759Created on: 27-04-17 20:49 what do arteries do? carry blood away from the heart 1 of 7 why do arteries have thick and elastic walls? they carry blood under high pressure so they have thick and elastic walls so they can stretch 2 of 7 what do coronary arteries do? carry blood to the heart 3 of 7 what do capillaries do? carry blood to cells and are needed for transport 4 of 7 out of veins, arteries and capillaries which is one cell thick and why? capillaries, for easy diffusion 5 of 7 what do veins do? carry blood back to the heart 6 of 7 why do veins have valves? they carry blood under lower pressure so have valves to orevent the back flow of blood 7 of 7
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