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I. Blood is pumped from the left ventricle through the aortic valve and into the aorta.
II. Oxygenated blood enters the left atrium from the pulmonary veins.
III. Blood is pumped through the mitral valve into the left ventricle.
IV. The aorta branches into major arteries to supply all oxygenated blood throughout the body.

The cardiovascular system is composed of two circulatory paths: pulmonary circulation and systemic circulation. Place the steps of systemic circulation in the correct order.

A) II, I, III, IV
B) I, II, III, IV
C) III, II, I, IV
D) IV, II, I, III


I Blood Is Pumped From The Left Ventricle Through The Aortic Valve And Into The Aorta II Oxygenated Blood Enters The Left Atrium From The Pulmonary Veins III Bl class=