Correct! The surface cells of the epidermis are too far away from any blood vessels to receive nourishment. They die and are rubbed off, to be replaced by newer cells pushing up from below.

No, this isn't right. The surface layer is composed of dead cells. The surface cells of the epidermis are too far away from any blood vessels to receive nourishment. They die and are rubbed off, to be replaced by newer cells pushing up from below.