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circulatory是什么意思，circulatory翻译
Circulatory System
The circulatory system, also known as the cardiovascular system, is a vital system in the human body. It is responsible for the transportation of oxygen, nutrients, hormones, and waste products to and from the cells. The circulatory system consists of the heart, blood vessels, and blood.
The heart is a muscular organ that acts as a pump to circulate the blood. It is divided into four chambers: two atria and two ventricles. The right side of the heart receives deoxygenated blood from the body and pumps it to the lungs, while the left side of the heart receives oxygenated blood from the lungs and pumps it to the rest of the body.
The blood vessels are the tubes that carry the blood throughout the body. There are three types of blood vessels: arteries, veins, and capillaries. Arteries carry oxygenated blood away from the heart to the body's tissues. Veins carry deoxygenated blood back to the heart from the body's tissues. Capillaries are tiny, thin