Hello people I am currently having problems doing my AS exam paper. Can you please help? The question is: During the cardiac cycle, the pressure in the left ventricle falls to a much lower level than in the aorta. Give an explanation for this difference? I have no idea about this because we were not taught about this. The second question was: How the effect of temperature on the oxygen dissociation curve of haemoglobin might be advantageous to mammals? The third question was: State two features of capillaries that enable tissue fluid to be formed: I only can think of one: Basement membrane is permeable so plasma can escape from the blood. The third question was: It is estimated that 85% of tissue fluid is reabsorbed at the venous end of a capillary. Describe what happens to the remaining tissue fluid. It is a three-mark question: but I put: The rest of tissue fluid is drained into the lymphatic system throught he lymph capillaries. And some fluid bathe the cells. I really appreciate your help. Thanks a lot.