How much blood is in our body? Detailed answer

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How much blood is in our body? Detailed answer

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How much blood is in our body?

The adult human body contains approximately 5,5 liters of blood. This amount is the most amazing transportation system imaginable. Blood circulates through the body in such a way that it reaches each of the billions of cells that make up the body's tissue. It carries nutrients and oxygen to every cell, removes waste products, distributes hormones and other chemicals, helps the body fight infections, and regulate body temperature.

Blood is largely made up of a colorless liquid called plasma, and the red color of blood comes from the red bodies floating in this liquid.

It is difficult to imagine the number of these blood cells contained in ten pints (a pint is about 0,5 liters) of blood: there are about 25 billion of them! There are about 300 million red blood cells in one drop of blood. If these cells are connected in a chain, keeping their true size, then this chain will be able to turn around the earth four times. Although these cells are very small, they can occupy a huge area.

For example, if you lay them out with a carpet, the total area of \u4090b\u1000bsuch a carpet will be XNUMX square meters. Since at any given moment about a quarter of the blood is in the lungs, this means that approximately XNUMX square meters of the surface of blood cells are in contact with air.

Every second, 2 billion blood cells pass through the air sacs of the lungs. Since the air in the flat areas is under high pressure, it contains more oxygen than in the highlands. Therefore, the higher a person lives, the more blood cells he has. Residents of the mountainous regions of Switzerland may have 50 percent more blood cells than a Londoner.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Why does a skunk smell?

If there is an animal in the world that you would not want to be at all, then it is most likely a skunk. However, the skunk is a friendly creature and quickly becomes a pet. What makes the animal so unpopular? Of course, this is his famous smell.

Why does a skunk smell? It turns out that he has special odorous glands that contain a fetid liquid. Skunk releases it with amazing accuracy.

Two glands are located under the tail. The animal aims at its enemy and shoots out a jet of liquid that can hit at a distance of 2,7 m and even more. Sometimes a skunk works with only one gland, sometimes with both. Each of them contains "ammunition" for 5-6 shots.

The jet has a suffocating effect, and therefore, being nearby, it is impossible to breathe. And if the liquid gets into the eyes, it can lead to temporary blindness!

But a skunk won't "hit" without warning. At first, he raises his tail or stomps his feet, so you have enough time to run away.

Since skunks have been farmed and their fur has been used, the scent glands have been removed for obvious reasons.

Now there are three types of skunks: striped, spotted and spotted. They live in North, Central and South America. The striped skunk has a white stripe from the nose to the short ears, another one starts on the neck and splits into two on the back. Striped skunks live from Canada to Mexico. The largest has a length of 76 cm and a 23 cm tail and weighs 13 kg.

The front paws of the animal are armed with long claws, with which it pulls out insects and their larvae from the ground. If you suddenly see many small holes on the ground, this most likely means that a skunk has passed through here.

Skunks bring many benefits to humans, as they feed mainly on beetles, crickets, wasps, grasshoppers, rodents, and even snakes.

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