pulmonary arteriovenous fistula
they carry deoxygenated blood
tricuspid valve
The pulmonary circuit.
Elatic recoil.
Pulmonary Arteries lead from the heart to the lungs. Systemic arteries go everywhere else. Consequently, the pulmonary arteries are usually slightly smaller and thinner. There is also less of them.
The pulmonary or pulmonic valve (a semilunar valve) controls blood flow from the right ventricle to the "pulmonary trunk" that branches into the two pulmonary arteries carrying blood to the lungs.
Patent Ductus Arteriosus
Well, between the right ventricle and the pulmonary arteries is an atrioventricular valve called the PULMONARY VALVE . Between the left ventricle and the aorta is an atrioventricular valve called the AORTIC VALVE
The pulmonary artery carries blood from the heart to the lungs. The pulmonary vein carries blood to the heart from the lungs. Unlike all other veins and arteries in the body the pulmonary artery has de-oxygenated blood and the pulmonary vein has oxygenated blood.
Veins carry deoxygenated blood, arteries carry oxygenated blood, and capillaries are for gas exchange between tissues and blood. One exception to that is the pulmonary artery and pulmonary veins of the heart -- they are named backward. The pulmonary artery actually carries the deoxygenated blood from the heart to the lungs, and the pulmonary vein carries the oxygenated blood from the lungs to the heart.
Arteries carry blood away from the hart, they have the highest blood pressure and amount of oxygen. (except for pulmonary arteries) Capillaries carry blood from arteries to veins. They are a single cell wide and exchange chemicals with nearby tissue. Veins carry blood towards the heart, and have the lowest amount of oxygen. (except for pulmonary veins)
These serve in transporting blood between heart, organs, and muscles. Arteries usually leave the heart and transports blood to the body(systematic circulation) or to the lungs(pulmonary circulation).