What is the superficial sublayer of the epidermis?

The superficial sublayer of the epidermis is the stratum corneum. This layer serves as the outermost barrier of the skin and is comprised of dead keratinized cells that have been shed from the underlying layers. It plays a crucial role in protecting the body from environmental factors such as pathogens, chemicals, and physical abrasions while also minimizing water loss through evaporation.

The cells in the stratum corneum are filled with keratin, a tough protein that adds to the skin's resilience and durability. This layer's thickness can vary depending on the area of the body, being more pronounced in areas subjected to greater abrasion, such as the palms and soles. Overall, the stratum corneum is essential for maintaining skin hydration and providing a defense mechanism against external threats.