单词	pulmonary circulation
释义	pulmonary circulation noun : the passage of blood from the right side of the heart through arteries to the lungs where it picks up oxygen and is returned to the left side of the heart by veins Word History First Known Use circa 1890, in the meaning defined above Medical Definition pulmonary circulation noun : the passage of venous blood from the right atrium of the heart through the right ventricle and pulmonary arteries to the lungs where it is oxygenated and its return via the pulmonary veins to enter the left auricle and participate in the systemic circulation
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