Blood vessels 0.0 / 5 ? BiologyBiological moleculesASEdexcel Created by: amyyeldhamCreated on: 03-12-14 11:03 Helps maintain high pressure in the arteries Small Lumen 1 of 11 Do not have valves Arteries 2 of 11 Has valves Veins 3 of 11 What stops the blood from flowing backwards and prevents pooling - mostly in the legs Valves 4 of 11 What delivers blood to the capillaries Arterioles 5 of 11 Has a larger lumen so blood flows at a lower speed and pressure Veins 6 of 11 Blood feeds back from the capillaries to Venules 7 of 11 Smallest blood vessel - one cell thick Capillaries 8 of 11 Capillaries have very thin cell walls to allow for diffusion 9 of 11 Blood in this vessel unloads oxygen and picks up carbon dioxide and latic acid (waste products of metabolism) Capillaries 10 of 11 Thick elastic and muscular walls to allow this vessel to contract and relax sending blood to all parts of the body Artery 11 of 11
Explain the course of events that leads to atherosclerosis (endothelial damage, inflammatory response, plaque formation, raised blood pressure). (Activity 1.8) 0.0 / 5
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