Complex sentence: In the stratum granulosum layer of the epidermis, lamellar bodies are secreted from keratinocytes, resulting in the formation of an impermeable, lipid-containing membrane that serves as a water barrier and is required for correct skin barrier function.
Split into simpler sentences: In the stratum granulosum layer of the epidermis, lamellar bodies are secreted from keratinocytes. This forms an impermeable, lipid-containing membrane that serves as a water barrier and is responsible for skin barrier function.