Mahsulot tavsifi:

The cardiovascular system consists of a network of vessels that circulates blood throughout the body, motored by the action of the heart. We’ll be talking about specifics of the heart in a separate lesson, so will concentrate here on the circulatory system. The inferior vena cava is the largest vein of the body. It carries de-oxygenated blood back from the lower part of the body to the right atrium of the heart. This blood is carrying carbon dioxide. The superior vena cava is above the heart and carries de-oxygenated blood from the head and arms to the right atrium of the heart. From the right atrium, the blood flows through the tricuspid valve to the right ventricle and then onto the lungs through the pulmonary valve and pulmonary artery. The fully oxygenated blood now flows BACK to the left atrium of the heart through the pulmonary veins. The oxygenated blood leaves the left atrium through the mitral (bicuspid) valve into the left ventricle, gets pumped from the left ventricle through the aortic valve to the aorta. At the arch of the aorta, 3 branches