What are the 3 functions of the stratum granulosum?

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The three functions of the stratum granulosum are:

1. Keratinization: The stratum granulosum is responsible for the process of keratinization, which involves the production of keratin protein. Keratin is a strong, fibrous protein that helps to protect the skin from environmental damage and dehydration.

2. Waterproofing: The stratum granulosum is involved in the formation of a waterproof barrier on the skin surface. The lipids produced by the keratinocytes in this layer help to prevent water loss and maintain the skin's hydration.

3. Cell death: The cells in the stratum granulosum undergo a process called apoptosis, or programmed cell death. This helps to remove old and damaged cells from the skin's surface, allowing for new cells to replace them and maintain the overall health and integrity of the skin.