Final answer:
The function not attributed to epidermal growth factor (EGF) is promoting the division of germinative cells in the stratum lucidum, as EGF's roles include epidermal repair, keratin production, and activating epithelial glands.
The correct answer is D) promoting the division of germinative cells in the stratum lucium.
Step-by-step explanation:
Epidermal Growth Factor (EGF) primarily functions in the epidermis to stimulate various processes that contribute to skin health and repair. However, the statement "promoting the division of germinative cells in the stratum lucium" is not accurate. The stratum lucidum is a thin, translucent layer of the epidermis found between the stratum corneum and stratum granulosum. Germinative cells, also known as basal cells, are typically found in the stratum basale, not in the stratum lucidum.
The correct functions of epidermal growth factor (EGF) include:
A) Stimulating epidermal repair after injury: EGF plays a crucial role in promoting wound healing and repairing damaged skin.
B) Accelerating production of keratin: EGF contributes to the differentiation and maturation of keratinocytes, the cells that produce the protein keratin.
C) Stimulating synthetic activity and secretion by epithelial glands: EGF influences the activity of various epithelial cells, including glandular cells, by promoting their synthetic activities and secretion.
It's important to note that EGF primarily acts on cells in the stratum basale and stratum spinosum, contributing to the regeneration and maintenance of the epidermis.