Robledo Aguilar Alfredo
Académico de Número.
An R Acad Nac Med (Madr). 2006;123(2):367-77; discussion 377-9.
The skin is a very large organ which covers all the body surface and it is made up of three layers: epidermis and its appendages, dermis and hypodermis. Its main function is that of protection:mechanical protection, function barrier due to its relative impermeability to water and the components dissolved in it, physical protection (sunlight and thermoregulation) and protection against alive agents. This last function is carried out through its own lymphoid system called SALT, formed by cells and humoral compounds with a precise organization. Nevertheless this lymphoid tissues functioning can be altered, thus producing an inflammatory and tumorous pathology.
皮肤是一个非常大的器官，覆盖全身表面，由三层组成：表皮及其附属器、真皮和皮下组织。其主要功能是保护：机械保护、因其对水及其中溶解成分相对不渗透而形成的功能屏障、物理保护（抵御阳光和调节体温）以及抵御生物因子。最后这项功能通过其自身名为皮肤相关淋巴组织（SALT）的淋巴系统来实现，该系统由具有精确组织结构的细胞和体液成分组成。然而，这种淋巴组织的功能可能会改变，从而产生炎症和肿瘤性病变。
