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What are the two major regions of the dermis?
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human skin
Human skin, whose cells are generated continuously by the body, serves as a protective barrier between the inside of the human body and the environment.
The dermis is composed of two major regions:
- Papillary layer: This outer region is named for the numerous microscopic papillae that project into the overlying epidermis. In humans, these structures are arranged in patterns that form fingerprints.1
- Reticular layer: This inner region consists of denser collagen than the papillary layer. It houses various structures, including skin glands, blood and lymph vessels, muscle cells, and nerve endings.21