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| Cardiovascular system anatomy |
The cardiovascular system and the lymphatic system are collectively called the vascular system, which is a closed continuous pipeline system in the human body. The cardiovascular system consists of the heart, arteries, veins, and capillaries. There is blood circulation inside, and the driving force for blood flow is the heart.
The heart has four lumens, namely: right atrium, right ventricle, left atrium, left ventricle. The left and right half hearts are separated from each other by the septum, and the rooms and rooms on the same side are connected by the mouth of the room. The atrium receives veins, the ventricles emit arteries, and there are valves at the atrioventricular and arterial ports. They act as valves when the blood flows, ensuring that blood flows in one direction in the heart.
The arteries are emitted from the ventricles and transport blood to the blood vessels in various parts of the body. The arteries continue to branch on the way to various parts of the body; the finer and finer, the finer the blood vessels in the tissue and intercellular movements.
