Is our skin changing? Detailed answer

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Is our skin changing? Detailed answer

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Is our skin changing?

The skin is made up of two layers of tissue. One of them is a thicker inner layer called the dermis, or corium. On top of it covers a thin layer of cells called the epidermis. There are no blood vessels in the epidermis. In fact, it consists of dead cells. Only the lowest layer of the epidermis receives nourishment and is alive.

The cells that make up this layer perform an important function: they divide and give rise to new cells. The upper layers of the epidermis grow as a result of this work of the lower layer, which produces cells for them. New cells are forced out to the outside, thus being cut off from the source of nutrition, and die. Chemical changes occur with them: they turn into scaly epithelial cells.

Summing up, we can say that the lower part of the epidermis consists of cells that give rise to new cells, and its upper part consists of dead cells that have become scaly. The upper layers are sloughed off as the lower layers give rise to new cells.

Thus, our skin daily produces billions of new cells and loses just as many dead, scaly ones. These tiny dead cells are especially noticeable on black stockings when you take them off at night. This process is ongoing and thanks to it our skin looks like new for many years.

But in fact, during the course of life, it is not the same skin that serves us: it is constantly updated with us. That is why all sorts of stains on it, for example from ink, iodine, resin or rust, soon disappear. The top layer peels off and a new one takes its place. In total, there are about thirty such layers of scaly dead cells, and when one of them is erased, new ones come to replace it from the lower layers. And the supply of new cells is never depleted.

Author: Likum A.

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