The
Skin is basically made from dermis and epidermis.
The epidermis is made from a epithelial tissue, made from many layers of overlying
cells, which are continually renewed by a cell multiplication which starts in
the basal layer ( or germinative layer). The dermis is the second layer of the
skin. It is under the basal layer and is made of conjunctive tissues that are
rich in collagen fibers, elastic and interactive proteoglycanic. Structural
resistance to the skin is the principal function of this layer.
Besides the many blood vessels and nerve fibers, we can also find in the dermis
important resident cells, such as, fibroblasts ( which produces collagen, elastin
and glycosaminoglycans responsible for the elasticity and the moisturizing of
the skin) macrophages, mast cells, neutrophiles, lymphocytes and eosinophils
(which act in the skin's defense mechanism).
The skin's color comes from the melanin, a pigment produced by the melanocyte,
which is located between the cells in the basal layer.