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Ay = — LL, Af Aorta——— Pulmonary, ‘ ig A “a, , tery——, , , , , , , , Great vessels\— 15, * Superior Vena cava = / (collect impure blood from Pulmonary ar, superior or upper part of body.) Superior Vena cava, , : liferfor vena cava = J (Collect impure blood from, , inferior or lower part of body.) Inferior vena cava o~,,,, Fk pana A 4 (Two right and two left, carry, _ pure blood from iung to left Auritle’, +. Pulmonary artery = (Arises from Ant. region of Rt., , , , ventricle & supply.impure blood to lung., , * Carotico systemic aorta or aorta = Arises from Left ventricle supplies blood to all parts of body except lungs., Coronary artery.and coronary sinus— neact, othe heart, wall wr ', , , , d by acollection of veins. The, , * Coronary arteries : It arise from the ascending aorta and supply blood t, ardium of the heart. It drains —, , * Coronary sinus : The coronary sinus is a large blood vessel that is forme, . function of the coronary sinus is to collect deoxygenated blood from the myoc, , into the right atrium., Valves in Heart whi S, * They stop the backflow of blood., * A tricuspid valve (3 muscular flaps or cusps) guards the opening between right atrium and right ventricle., * A bicuspid (mitral) valye guards the opening between left atrium and left ventricle. These valves allow the, flow of blood only in one direction, i.e. from atria to ventricles. :, * Semilunar valves — They are present at the base of plilmonary artery and aorta. They stop the flow of, , blood from pulmonary artery and aorta into ventricles., Semilunar valves, , , , , , , , Semilunar valves in pulmonary artery are called pulmonary valve:, , , , milunar valves in aorta are called aortic valve.