the pulmonary trunk receives blood from the right ventricle.
the pulmonary trunk receives blood from the right ventricle.
where does the pulmonary trunk receive blood from?
the right ventricle
the right atrium is connected to the right ventricle by the tricuspid valve. the walls of the right ventricle are lined with trabeculae carneae, ridges of cardiac muscle covered by endocardium. in addition to these muscular ridges, a band of cardiac muscle, also covered by endocardium, known as the moderator band reinforces the thin walls of the right ventricle and plays a crucial role in cardiac conduction. it arises from the lower part of the interventricular septum and crosses the interior space of the right ventricle to connect with the inferior papillary muscle. the right ventricle tapers into the pulmonary trunk, into which it ejects blood when contracting. the pulmonary trunk branches into the left and right pulmonary arteries that carry the blood to each lung. the pulmonary valve lies between the right heart and the pulmonary trunk.
heart
the aortic and pulmonary valves are located at the base of the aorta and the pulmonary trunk respectively. these are also called the "semilunar valves". these two arteries receive blood from the ventricles and their semilunar valves permit blood to be forced into the arteries, and prevent backflow from the arteries into the ventricles. these valves do not have chordae tendineae, and are more similar to the valves in veins than they are to the atrioventricular valves. the closure of the semilunar valves causes the second heart sound.
heart valve