do you know that Right ventricle and the left atrium are connected to the lungs? Can you think why
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Explanation:
When the right ventricle contracts, blood is forced through the pulmonary semilunar valve into the pulmonary artery. Then it travels to the lungs. In the lungs, the blood receives oxygen then leaves through the pulmonary veins. It returns to the heart and enters the left atrium
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Explanation:
for the exchange of gases to take place
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