The double circulation
The small circulatory system is one of the two blood circulars in the human body. The small circulation causes oxygen-poor / carbonated blood from the right ventricle to the pulmonary artery; From the pulmonary artery, carbonated blood is forced into the lung capillaries. In the lungs, the carbon dioxide (carbonic acid) dissolved in the blood is diffused outwards, and oxygen is also absorbed into the blood by diffusion. Next, the oxygen bound to hemoglobin is transported through the blood through the pulmonary veins to the left ventricle. This whole road is called the small bloodstream. From the left ventricle, the oxygen-rich blood then flows through the mitral valve to the left ventricle: the beginning of the large circulatory system. From the left ventricle, the oxygen-rich blood enters the aorta and further the large circulation, providing the cells with oxygen and nutrients.
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