What is the outermost layer of human skin called?

• A. Dermis
• B. Epidermis
• C. Stratum corneum
• D. Hypodermis

Answer: (C)

The outermost layer of human skin is known as the epidermis. The epidermis plays a vital role in protecting the body against environmental factors such as bacteria, UV radiation, and dehydration. Within the epidermis, the stratum corneum represents the very top layer, consisting of dead skin cells that provide a barrier function.

While the stratum corneum is indeed the outermost layer in the sense that it is the first point of contact with the external environment, when discussing the layers of skin as a whole, the epidermis encompasses all the layers of skin from the surface down to where it meets the dermis. Hence, the classification of the outermost layer as the epidermis is more accurate in terms of skin anatomy.

The dermis lies beneath the epidermis and contains connective tissue, blood vessels, and hair follicles, while the hypodermis is a deeper layer that consists primarily of fat and connective tissues, serving as insulation and cushioning for the body.