Final answer:
Freshly oxygenated blood is returned to the heart via the A. pulmonary veins. The pulmonary circuit carries oxygenated blood from the heart to the lungs and back.
Step-by-step explanation:
Freshly oxygenated blood is returned to the heart via the pulmonary veins (A). Once gas exchange is completed in the lungs, oxygenated blood flows from the pulmonary capillaries into the pulmonary venules and then into larger pulmonary veins. These pulmonary veins return the oxygenated blood to the left atrium of the heart. The pulmonary circuit is responsible for carrying oxygenated blood from the heart to the lungs and back.
Freshly oxygenated blood is returned to the heart via the pulmonary veins. The pulmonary circuit carries oxygenated blood from the heart to the lungs and back.Once gas exchange is completed in the lungs, oxygenated blood flows from the pulmonary capillaries into the pulmonary venules and then into larger pulmonary veins.