Questions: Which layer of the epidermis is found only on the palms of the hands and the soles of the feet? stratum corneum stratum lucidum stratum basale stratum spinosum

The answer is the second one (or B): stratum lucidum.

Explanation for each option:

• Stratum corneum: This is the outermost layer of the epidermis, consisting of dead, flattened keratinocytes. It is present in all areas of the skin, not just the palms and soles.
• Stratum lucidum: This layer is found only in the thick skin of the palms of the hands and the soles of the feet. It is a thin, clear layer of dead skin cells that provides an additional barrier.
• Stratum basale: This is the deepest layer of the epidermis, where new skin cells are generated. It is present in all areas of the skin.
• Stratum spinosum: This layer is located above the stratum basale and is involved in the initial stages of keratinocyte maturation. It is also present in all areas of the skin.

Summary: The stratum lucidum is the specific layer of the epidermis found only on the palms of the hands and the soles of the feet.