12 Skin system
12.A Skin System
The skin is organic, meaning it is a group of tissues working together to perform a specific function, i.e.:
More info: http://www.wisc-online.com/objects/index_tj.asp?objID=AP12204
12.A.1 Functions in homeostasis and osmoregulation
12.A.2 Functions in thermoregulation
12.A.2.a hair, erectile musculature
12.A.2.b fat layer for insulation
12.A.2.c sweat glands, location in dermis
12.A.2.d vasoconstriction and vasodilation in surface capillaries
12.A.3 Physical protection
12.A.3.a nails, calluses, hair
12.A.3.b protection against abrasion, disease organisms
12.A.4 Structure
12.A.4.a layer differentiation, cell types, tissue types (epithelial, connective)
12.A.4.b relative impermeability to water
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