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The epidermis contains no blood vessels, and is nourished by diffusion from the dermis. The main type of cells which make up the epidermis are keratinocytes, melanocytes, Langerhans cells and Merkels cells. The epidermis helps the skin to regulate body temperature.
The types of epidermal cells are: 1  The Keratinocytes (Keratin producing cells) 2  The Melanocytes ( Melanin producing cells) 3  The Langerhansâ cells ( immunity providing cells) 4  The Merkelâs cells (sensory function)