Identify and explain the main function of the skin

From deep to superficial, the order of the strata of the epidermis is Spinosum - granulosum - basale - lucidum - corneum Basale - granulosum - spinosum - lucidum - corneum Corneum - granulosum - lucidum - spinosum - basale Corneum - lucidum - granulosum - spinosum - basale Basale spinosum - granulosum - lucidum corneum

Elaborate thoroughly: The cuticle is a complex non-cellular layer secreted by the epidermis. It is the seat of complex processes and changes. Along this line how are sclerotization and melanization of the integument influenced by the hemolymph?

Describe at least one way the skin helps with each of the following functions: Assessment of respiratory function Absorption of calcium from food Protection from water loss