What is the name of the layer of the epidermis known for its clear cells?

The layer of the epidermis known for its clear cells is the stratum lucidum. This layer is located between the stratum granulosum and the stratum corneum, primarily in areas of thick skin, such as the palms of the hands and the soles of the feet. The cells in the stratum lucidum are flattened and appear translucent, which is why this layer is named "lucidum," meaning clear or light.

The stratum lucidum consists of several layers of dead keratinocytes that provide an additional barrier to the skin, enhancing its protective function. The clear appearance of the cells is due to the presence of eleidin, a protein that is a precursor to keratin. This layer is especially important in providing a smoother, more robust barrier in areas subjected to friction, contributing to the overall durability and resilience of the skin.

In contrast, the other layers such as the stratum corneum, stratum granulosum, and stratum spinosum have distinct characteristics and do not feature the clear, translucent cells that define the stratum lucidum. Understanding the specific functions and characteristics of each epidermal layer is crucial in the study of skin physiology and histology.