Papillary Derm

The papillary derm holds are name of its surface in papillae which form projections alternating with épidermiques prolongations . It has a fibrous structure very fine, rich in cells, capillary blood, nervous fibers and tactile corpuscles.

The papillary derm contains:

of reticulinic fibers corresponds to a variety of Collagène,
of the fibers oxytalanes form a perpendicular network which appears to be anchored to the basal Membrane. They play a big role in the mechanical resistance of the skin,
of the Fibronectine which conditions the foothills of the dermo-épidermique junction and seems to play a part in the adherence of fabrics to the junction derm-skin and between the cells endothéliales of the Derme,
of the Fibrocyte S which are cells responsible for the biosynthesis of the macromolecules forming the conjunctive Tissu derm,
of the Histiocyte S (derive from precursors myéloïdes of the osseous Moelle) which, thanks to their property of Phagocytose, intervene in the defense of the organization. They play a big role in the self-generation, the activation of immunity.
rare Mastocyte S,
and some cells of blood origin (Lymphocyte S, Plasmocyte S, etc) which are visible during an ignition or of a pathological state.

Between the cells and fibers the interstitial lymph is which contains Protéoglycane S, Hyaluronic acid , Mucopolysaccharide S, etc

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