Blood flow through the heart

In this VR lesson, Evan guides you through the path of blood flow in the heart, beginning with the right and left ventricles separated by the interventricular septum. He highlights the left anterior descending artery, a branch of the left coronary artery, running externally along the septum.

Blood enters the right atrium via the superior and inferior vena cavae, passes through the right atrioventricular valve to the right ventricle, then through the pulmonary semilunar valve into the pulmonary trunk, which divides into pulmonary arteries carrying blood to the lungs.

Oxygenated blood returns through pulmonary veins into the left atrium, then passes through the mitral valve into the left ventricle, where trabeculae carneae are visible.

Evan shows how blood exits through the aortic semilunar valve into the ascending aorta, continues to the aortic arch and descending aorta, with major branches including the brachiocephalic artery, left common carotid artery, and left subclavian artery.