Heart and Cardiac cycle 5.0 / 5 based on 1 rating ? BiologyHuman, animal and plant physiologyTopic 1ASEdexcel Created by: horsewithnonameCreated on: 23-05-16 09:42 These carry blood away from the heart Arteries 1 of 10 These carry blood to the heart Veins 2 of 10 The smallest blood vessels, where metabolic exchange occurs Capillaries 3 of 10 When the atria contract and the blood is forced into the ventricles Atrial systole 4 of 10 When the ventricles contract and the blood is forced into the aorta/pulmonary artery Ventricular systole 5 of 10 When the whole heart is relaxed and blood starts to return to the atria Cardiac diastole 6 of 10 This chamber has the thickest and most muscular walls Left ventricle 7 of 10 These chambers have less muscular walls as they only have to pump blood inside the heart Atria 8 of 10 These stop blood flowing back into the atria when the ventricles contract Atrioventricular valves 9 of 10 These stop blood flowing back into the heart Semilunar valves 10 of 10
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