Pulmonary Trunk

The pulmonary trunk (pulmonary artery) arises from the heart's right ventricle and divides into two pulmonary arteries:The right pulmonary artery;The left pulmonary artery.The pulmonary trunk is an artery located in the thorax. It measures 5 cm in length and 3 cm in diameter. Unlike the conventional arterial network, the pulmonary trunk contains low-oxygen, carbon dioxide-rich blood. The pulmonary trunk arises from its orifice in the right ventricle, anterior to the ascending aorta. The pulmonary trunk arises from its orifice in the right ventricle, in front of the ascending aorta, and travels upwards, to the left and backwards, making half a turn against the anterior and then the left lateral surface of the aorta. It divides below the aortic arch into two terminal arteries, the right and left pulmonary arteries.