Which of the following correctly describes how pulmonary circulation and systemic circulation differ? in pulmonary circulation, deoxygenated blood is pumped from the heart's left ventricle, while in systemic circulation, oxygenated blood is pumped from the heart's right ventricle. in pulmonary circulation, oxygenated blood is pumped from the heart's right ventricle, while in systemic circulation, deoxygenated blood is pumped from the heart's left ventricle. in pulmonary circulation, deoxygenated blood is pumped from the heart's right ventricle, while in systemic circulation, oxygenated blood is pumped from the heart's left ventricle. in pulmonary circulation, oxygenated blood is pumped from the heart's left ventricle, while in systemic circulation, deoxygenated blood is pumped from the heart's right ventricle.