Biology Topic 1 0.0 / 5 ? BiologyHealth, illness and diseaseA2/A-levelEdexcel Created by: GetThat A*Created on: 14-01-20 12:57 What are the properties of water? 1. Solvent 2. Dipolar 3. Cohesive 4. Transportation 1 of 8 What does each side of the heart do? Right: carries deoxygenated blood to lungs Left: carries oxygenated blood to the body 2 of 8 What do valves do? Prevent backflow. Higher pressure behind= open. Higher pressure infront= close 3 of 8 What are the two main types of valves in the heart? Atrioventricular valve: link atria to ventricles Semi-lunar valves: link ventricles to pulmonary artery and aorta 4 of 8 What are the adaptations of arteries? What are the adaptations of arteries? 5 of 8 What are the adaptations of veins? Blood back to heart, wide, v. little elastic/ muscle tissue (low pressure), has valves, contractions of muscles 6 of 8 What are the adaptations of capillaries? Smallest, metabolic exchange, capillary beds (increase sa), walls 1 cell thick (speed up diffusion) 7 of 8 What are the stages of the cardiac cycle? 1. Ventricular diastole 2. Ventricular systole 3. Cardiac diastole 8 of 8
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