VAN 121: Veterinary Gross Anatomy-II (2+2)

PULMONARY ARTERY

• The pulmonary artery springs from the right ventricle at the conus arteriosus.
• It curves upward, backwards and medially and divides behind the aortic arch into right and left pulmonary arteries.
• It is related in front to the right atrium and behind to the left atrium and medially to the aorta.
• It is enclosed along with the latter in a common sheath of the visceral part of the serous pericardium.
• Near its termination divides into two branches, it is connected to the aorta by the ligamentum arteriosus, the remnant of the fetal ductus arteriosus.
• The right pulmonary artery is a little longer than left.
• It passes under the bifurcation of the trachea to the hilus of the lung and inside the latter accompanies the bronchial tree on its ventrolateral surface.
• The left pulmonary artery passes backwards under the left bronchial lymph gland and enters the root of the left lung below the left bronchus.