What is plasma? Detailed answer

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What is plasma? Detailed answer

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What is plasma?

The average person has more than six liters of blood in their body. This blood is made up of a fluid that contains various types of cells. This liquid is called plasma. About 55 percent of the blood volume is this plasma. It is a clear, slightly yellowish liquid. After eating, tiny globules of fat dissolve in it and slightly cloud it. Therefore, you are asked not to eat before the blood test.

Plasma in your body is like a river that moves vital substances. It carries substances from the digested food from the walls of the small intestine to the tissues of the body. It also carries waste products from the tissues to the kidneys.

But this is only part of the work done by the plasma. It contains antibodies that make you immune to disease and hormones that regulate various body processes. It also carries most of the waste carbon dioxide from the tissues back to the lungs.

So what you see is that plasma actually contains several hundred different substances. In addition to these substances, plasma consists of 91 percent water, 7 percent protein and 0,9 percent mineral salts. Salts and protein are necessary to maintain the necessary balance between water in the tissues and in the blood. Mineral salts in plasma also perform other vital functions in the body. Plasma gets them from the food we eat.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What is rubber?

Rubber has been around for as long as nature itself. The fossilized remains of rubber trees that have been found are almost 3 million years old! Raw rubber balls found among the ruins of the Inca and Mayan civilizations in Central and South America are at least 900 years old.

During his second voyage to the Americas, Columbus saw that the inhabitants of Haiti were playing with a ball made from "tree sap". But even before that, the natives of Southeast Asia knew about rubber (rubber), made from the "sap" of trees, with which they coated their baskets and jugs to make them waterproof!

Rubber is found in 400 different trees and shrubs. But the amount of rubber in different plants is not the same, therefore it is unprofitable to obtain rubber from such plants as, for example, dandelion, spurge, wormwood.

Rubber is a sticky, elastic solid that is made from a whitish liquid called "latex" that is different from tree sap. Latex is found in the bark, roots, stem, branches, leaves, and fruits of plants and trees. But most of all it is under the bark of the branches and trunk of rubber plants.

Latex consists of the smallest particles of liquid, solid particles, and other impurities. Only about 33% of latex is rubber, the rest is water. The rubber particles in latex are brought together to form a rubber ball.

Rubber plants grow best no further than 10 degrees from the equator to the north and south, so the 1300 km wide strip on both sides of the equator is known as the "rubber belt". The fact is that rubber plants require a very warm, humid climate and fertile soil. Most of the rubber comes from Hevea brasiliensis. By its name, it can be assumed that the tree was first discovered in Brazil. At present, almost 96% of the world production of natural rubber comes from plantations of these trees, they are grown in many countries of the rubber belt.

Among Europeans, the first to manufacture goods from rubber were, apparently, the French, who began to manufacture suspenders and garters around 1800.

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