Final answer:
A) Desquamation is the process by which keratinocytes are continually shed from the skin's surface as part of the natural renewal of the epidermis, particularly the stratum corneum.
Step-by-step explanation:
The process by which keratinocytes are continually shed from the skin is known as A) desquamation. Desquamation occurs as part of the normal regeneration of the epidermis.
As new keratinocytes are formed within the lower layers of the epidermis, they migrate upwards as they mature and produce keratin, a tough, fibrous protein.
Eventually, these cells reach the outermost layer, called the stratum corneum, where they are no longer alive and form a protective barrier.
Over time, these dead keratinocytes are sloughed away from the surface, maintaining the health and integrity of the skin.
This continuous cycle is essential for both protective functions, such as preventing the penetration of microbes, and for maintaining the skin's aesthetic appearance.