the sense organ skin

) Look at the picture. How many layers are there in our skin?
http://www.skin-care-information.org/how-the-skin-works.html

2)The epidermis is made up of five layers. What are the five layers in the epidermis?
http://www.fatfreekitchen.com/beauty/skin.html

3) What is the function of the stratum corneum?
http://www.abpi.org.uk/publications/publication_details/targetSkin/about-skin2.asp