Definition that contains pulmonary artery
- pulmonary embolism blockage of the pulmonary artery by foreign matter or by a blood clot
- pulmonary stenosis abnormal narrowing of the opening into the pulmonary artery from the right ventricle
- systole the contraction of the chambers of the heart (especially the ventricles) to drive blood into the aorta and pulmonary artery
- pulmonary valve a semilunar valve between the right ventricle and the pulmonary artery; prevents blood from flowing from the artery back into the heart
- ductus arteriosus a blood vessel in a fetus that bypasses pulmonary circulation by connecting the pulmonary artery directly to the ascending aorta; normally closes at birth