How does the heart work )step by step) 0.0 / 5 ? BiologyThe heartGCSEAQA Created by: IJM1Created on: 19-02-18 05:55 Step 1 Blood flows into the two artia from the vena cava and the pulmonary vein 1 of 6 Step 2 The artia contract, pushing the blood into the ventricles 2 of 6 Step 3 The ventircles contract, forcing the blood into the pulmonary artery and the aorta, and out of the heart 3 of 6 Step 4 The blood then flows into the organs through the aorta, and returns through the veins 4 of 6 Step 5 The blood then flows to the organs through the arteries, and returns through the veins. 5 of 6 Step 6 The atria fills again and the whole cycle starts again. 6 of 6
Comments
No comments have yet been made