The correct order of the layers of the epidermis from superficial to deep is as follows:
- Stratum Corneum (e)
- Stratum Lucidum (d)
- Stratum Granulosum (b)
- Stratum Spinosum (c)
- Stratum Basale (a)
To elaborate, the stratum corneum is the outermost layer, consisting of dead skin cells that are continuously shed and replaced. Underneath it, the stratum lucidum is found, which is a thin, clear layer mostly present in areas of thick skin, such as the palms and soles. Below that is the stratum granulosum, where cells begin to lose their nuclei and start the process of keratinization. The stratum spinosum follows, characterized by its spiny appearance due to desmosomal connections between cells. Finally, the deepest layer is the stratum basale, where new skin cells are produced through mitosis. This understanding of the layers is essential for grasping how our skin functions in protection and regeneration.