Laser Technician IBEC Board Exam 2025 - Free International Board of Electrologist Certification Practice Questions.

The stratum lucidum is a specific layer of the epidermis, located between the stratum corneum and the stratum granulosum. Its primary function is linked to the process of keratinization. In this layer, keratinocytes become flattened and filled with a protein called keratin, which contributes to the protective barrier of the skin. The presence of keratin makes the cells transparent and provides a tough, resilient quality to the skin, particularly in areas subject to friction, such as the palms of the hands and soles of the feet.

Keratinization is crucial for the skin as it allows for the formation of a protective layer that helps to prevent water loss and protects against environmental damage. The cells in the stratum lucidum are often considered to be in a transitional stage of keratinization, which emphasizes the importance of this process within this particular layer.

The other processes mentioned, such as cell division and protein synthesis, predominantly occur in different layers of the skin. Cell division primarily takes place in the lower layers of the epidermis, specifically in the stratum basale. Protein synthesis occurs throughout various layers but is most significant in the deeper layers of the epidermis and dermis where cellular activity is higher. Absorption, while