Final answer:
The most superficial layer of the epidermis is the stratum corneum, which is made up of dead, sheddable cells.
Step-by-step explanation:
The most superficial layer of the epidermis, composed of very thin squamous cells, is the stratum corneum. This layer consists of dead cells that shed periodically and is progressively replaced by cells formed from the basal layer. The epidermis itself is made up of several layers, starting with the deepest stratum basale, followed by stratum spinosum, stratum granulosum, and ending with the stratum corneum at the outermost part. Additionally, in thick skin, found on palms and soles, there is an extra layer called the stratum lucidum, situated between the stratum corneum and stratum granulosum.