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Which of the following is the deepest layer of the epidermis?
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Stratum spinosum
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Stratum corneum
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Stratum granulosum
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Stratum basale
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The stratum basale is the deepest layer of the epidermis. It is responsible for the continuous production of new skin cells, which then move up to the upper layers of the epidermis. This layer contains basal cells that divide and differentiate into keratinocytes, the main cells of the epidermis. The stratum basale also contains melanocytes, which produce the pigment melanin that gives color to the skin and protects it from harmful UV radiation.
