Editing Integumentary system (section)

====Dermis====
{{Main|Dermis}}
The dermis is the underlying connective tissue layer that supports the epidermis. It is composed of dense irregular connective tissue and [[Loose connective tissue|areolar connective tissue]] such as a collagen with [[elastin]] arranged in a diffusely bundled and woven pattern.

The dermis has two layers: the papillary dermis and the reticular layer. The papillary layer is the superficial layer that forms finger-like projections into the epidermis (dermal papillae),<ref name="statpearls2">{{cite book |last1=Kim |first1=Joyce Y. |last2=Dao |first2=Harry |title=StatPearls |publisher=StatPearls Publishing |url=https://www.ncbi.nlm.nih.gov/books/NBK554386/ |chapter=Physiology, Integument|year=2022 |pmid=32119273 }}</ref> and consists of highly vascularized, loose connective tissue. The reticular layer is the deep layer of the dermis and consists of the dense irregular connective tissue. These layers serve to give elasticity to the integument, allowing stretching and conferring flexibility, while also resisting distortions, wrinkling, and sagging.<ref name="aging skin"/> The dermal layer provides a site for the endings of blood vessels and nerves. Many [[chromatophores]] are also stored in this layer, as are the bases of integumental structures such as [[hair]], [[feathers]], and [[glands]].