One important function of deciduous teeth is that they "point" to the molar teeth where they will erupt. If a baby tooth falls out prematurely, the permanent tooth "loses its bearings" and can grow crooked.

By the age of 6-7, these teeth will begin to erupt. This process is accompanied by the resorption of the roots of the baby teeth. This causes the baby teeth to loosen. When the shortened root can no longer hold the baby tooth in the hole, it falls out.

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, located in the hair follicle, are responsible for hair color. They synthesize hair pigments, and their combination determines hair color. Indeed, melanocytes themselves are formed from stem cells.

As we age, the hair follicles wear down. This is manifested by a decrease in the number of melanocytes in the hair follicles, as well as a decrease in the activity of the remaining melanocytes.

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1️⃣The organ is given this name for a reason. It is the only part of the human and animal body that does not sink in water.

2️⃣The organ contains 450 ml of blood, one tenth of its total volume in the body. In the case of an injury, the lack of this fluid is compensated from the reserve.

3️⃣The left lung is smaller than the right. The first consists of two lobes, while the second consists of three. This is necessary so that there is room for the heart in the chest.

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