What is the term for the inner layer of friction skin?

The inner layer of friction skin is referred to as the dermis. This layer is crucial as it provides structural support and elasticity to the skin through its composition of connective tissue, blood vessels, and nerve endings. The dermis also contains the sweat glands and follicular structures that contribute to the unique characteristics of friction skin, such as fingerprints and the ability to detect tactile stimuli.

The epidermis, while an important layer of skin, is the outermost layer and does not provide the same structural support as the dermis. The stratum corneum is a part of the epidermis, specifically the outermost layer composed of dead skin cells, which serve as a barrier for protection. The stratum Malpighii, which also belongs to the epidermis, is located just below the stratum corneum and is primarily responsible for the proliferation of skin cells. Thus, understanding the different layers of skin is essential in recognizing the role the dermis plays in the structure and functionality of friction skin.