1. Functions of skin: Answer -protection -temp regulation -psychosocial -sensation -vitamin D -immunological -absorption -elimination 2. Protection: Answer -acts as a barrier to water -1st line of defense against microorganisms and UV rays ofsun, injury to underlying skin is protected if outside later of skin is intact -prevents loss of moisture from surface and underlying structures 3. Temp regulation: Answer blood vessels dilate to dissipate heat, in cold blood vessels in skin constrict to diminish heat loss, in cold contraction of pilomotor muscles cause goosebumps (insulation) 4. Psychosocial: Answer external appearance is major contributor to self-esteem, identification and communication 5. Sensation: Answer -nerve endings= touch, pain pressure, and temperature, allow skin to allow body to adjust to environment