Question

which layer of the epidermis is known as the horny layer and consists of 20 - 30 layers of dead cells bound tightly together to prevent water loss? stratum lucidum stratum spinosum stratum corneum stratum basale

Explanation:

The stratum corneum is the outermost layer of the epidermis. It is composed of 20 - 30 layers of dead keratinocytes. These dead cells (corneocytes) are tightly packed and have a lipid - rich intercellular matrix. The keratin in the cells and the lipids in the matrix work together to form a barrier. This barrier function is crucial for preventing excessive water loss from the body (transepidermal water loss) and also protects against the entry of pathogens and harmful substances from the external environment.

Answer:

Stratum corneum