Pulmonary aorta in mammlian embryo communicates with aorta by a thin vessel called ductus arteriosus which later closes are remains in adult as

In mammalian embryo the pulmonary aorta communicates with carotico-systemic aorta by a narrow ductus arteriosus, in the adult this connection closes learving :-

In mammalian embryo the pulmonary aorta communicates with carotico-systemic aorta by a narrow ductus arteriosus, in the adult this connection closes learving :-

In mammalian embryo the pulmonary aorta communicates with carotico-systemic aorta by a narrow ductus arteriosus, in the adult this connection closes learving :-

In mammalian embryo the pulmonary aorta communicates with carotico-systemic aorta by a narrow ductus arteriosus,in the adult this connection closes leaving :-

A : Isovolumetric systole of a normal cardiac cycle is responsible for the opening of semilunar valves causing the blood flow into aortic aorta and pulmonary aorta. R : During isovolumetric systole, intraventricular pressure increases as semilunar and AV valves are closed and ventricles are contracting .