How many meters of blood vessels does a person have?

We all know that there are many blood vessels in the human body, and these blood vessels in the human body can not only promote blood circulation in the human body, but also help the human body build a natural protective barrier. The blood vessels in our body are not only the aorta, but also some relatively fine capillaries. These capillaries also play a vital role. So how many meters are a person's blood vessels?

The blood vessels in the human body are divided into four categories, namely: arteries, veins, capillaries and microvessels. For a medium-sized adult male who is 175cm tall and weighs 80kg, the total length of his four types of blood vessels adds up to 176,000 kilometers, which is more than four laps around the earth's equator (43,000 kilometers).

But in terms of the length of blood vessels, adults and children are different, tall people and short people are different, fat people and thin people are different, young people and old people are different. For reference only.

How long are all the blood vessels in the human body?

This is a classic question. The skin is the organ with the largest surface area in the human body, and the vascular system is the largest system in the human body. The vascular system is composed of veins, arteries and capillaries, with a total length of about 100,000 kilometers (if connected, it could circle the earth twice) and a surface area of ​​more than 0.5 hectares - the above two data apply to an average adult. The major part of the length of the vascular system is derived from the "capillary network". "Although each capillary is very short, there are tens of thousands of them in the human body, so when they are added together, their total length becomes very impressive."

Blood vessels include arteries, veins and capillaries.

The beating blood vessels that can be felt on the surface of the skin are arteries. It is used to transport nutrients in the blood, such as oxygen, sugar, vitamins, amino acids, inorganic salts, etc. to various tissues of the body, allowing various tissue cells to grow and reproduce and maintain human life activities.

The purple-colored blood vessels that do not beat on the human body surface and limbs are veins. Its function is just the opposite. It takes away the waste products discharged from the metabolism of various tissue cells, such as carbon dioxide and urea, and sends carbon dioxide to the lungs for excretion from the body, and sends urea and other products to the kidneys for excretion from the body.

Capillaries are much thinner than a hair and are invisible to the naked eye. They have a diameter of only 5-20 microns. Only single cells can pass through capillaries. Capillaries act like irrigation channels, carrying blood to various parts of the human body.

Blood circulates repeatedly in the blood vessels through the pumping of the heart, over and over again, never stopping. If capillaries are included, the length of blood vessels in the human body is at least 96,000 kilometers. Isn't this a scary number?