⠀
In previous posts we have learned that the top skin layer consists of 5 "floors" and the 1st is occupied by newborn cells and their mums.
⠀
But it also have guards who`s job is to protect skin from Sun: as soon as we get out in the sunshine guards become active and in order to protect skin they start throwing black umbrellas up to the surface (see the carousel).
⠀
Due to a large amount of umbrellas being released, our skin shade becomes darker (tan).
⠀
However places, which are covered in clothing do not chage in colour: if there is no sun and danger, guards are asleep and do not release a single umbrella.
⠀
If we spend too much time under direct Sun without protection, some guards may go crazy and start throwing enormous amounts of black umbrellas. Due to a high concentration of umbrellas in this spot- pigmentation may appear.
⠀
CAST:
Guards: melanocytes;
Umbrellas: pigment melanin;
5 floor building: Epidermis (top skin layer);
1st floor of Epidermis: basal layer;
Inhabitants of the 1st floor: keratinocytes.
