Florida Barber License Practice Test

Which is the epidermal layer that is made up of clear cells found on the palms of hands?

1. Stratum granulosum

2. Stratum lucidum

3. Stratum basale

4. Stratum spinosum

The correct answer is: Stratum lucidum

The epidermal layer comprised of clear cells and located on the palms of the hands is known as the stratum lucidum. This layer is a thin and translucent layer of the skin that provides an additional barrier and protection to areas that experience a lot of friction, such as the palms and soles of the feet. The cells in the stratum lucidum are dead and filled with a protein called eleidin, which later transforms into keratin, aiding in waterproofing and strengthening the skin. This layer is not typically found in thinner skin regions of the body, which is why it is significant in areas that require more resilience. The other layers mentioned are part of the epidermis but serve different functions. For example, the stratum granulosum contains granules that contribute to the keratinization process, the stratum basale is the deepest layer where new skin cells are generated, and the stratum spinosum contains several layers of keratinocytes that provide strength and flexibility to the skin. Each layer plays a role in the overall function and health of the skin, but the stratum lucidum is specifically identified for its clear cell composition and location on high-friction areas like the palms.