Layers within the epidermis

• Stratum corneum


  Made up of totally dead cells

  Function: Protects and waterproof
• Stratum lucidum


  Extra layer of dead cells on palms and soles

  Function: Extra protection
• Stratum granulosum


  Cells In the process of dying

  Function: Cells contain granules that make keratin
• Stratum spinosum


  Living cells that make Vitamin D in sunlight

  - Langerhans' cells (microphage-like cells)

  Function: Phagocytosis
• Stratum basale


  Cells - Living cells (make new cells by mitosis)

  - Also contains melanocytes (produce melanin)

  Function: Makes brown pigment melanin
• Basement membrane


  Anchors down the epithelium to its loose connective tissue
• Dermis


  Supply blood to the epidermis