The presence of the pulmonary trunk and aorta covers the interatrial septum, and the atrioventricular septum is cut away to show the atrioventricular valves. (CC-BY-4. To ensure that blood flows in only one direction, each ventricle has an in (inlet) valve and an out (outlet) valve. \): Internal Structures of the Heart This anterior view of the heart shows the four chambers, the major vessels and their early branches, as well as the valves. In this article we will discuss about Internal structure of heart, part of structure system of Right Atrium,Right Ventricle,Left Atrium,Left Atrium,Left.
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