The Blood Circulation in Heart

The course of blood circulation in the heart

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The oxygenated blood from the lung is brought to the left auricle by four pulmonary veins. Of the left auricle, it moves to a single left ventricle. The right auricle receives deoxygenated blood from the superior vena cava, inferior vena cava, and coronary sinus. This deoxygenated blood from the right auricle goes to the right ventricle. From the right ventricle, it goes to the pulmonary aorta, which supplies it to the lung where it gets oxygenated and comes back to the left auricle. From the left ventricle, the oxygenated blood goes to the systemic aorta and is supplied to the various parts of the body, and comes back to the right auricle.

• The wall of the heart gets the supply of oxygenated blood from the coronary artery arising from the systemic aorta and deoxygenated blood from the wall of the heart is collected by the coronary sinus pouring it into the right auricle.