temperature control, some antibacterial properties

abundant on palms, soles, and forehead

confined to axillary and anogenital areas

widly distributed, not found on thick skin of palms and soles

Functions of the skin (3)

The skin acts as a _ barrier (3)

secretes chemicals that protect us, but also prevents chemicals from entering

structures of the skin block water and water-soluble substances from entering

phagocytic cells engulf foreign antigens and present to the white blood cell to activate the immune response

unnoticeable sweat, at normal, resting body temperature

dermal blood vessels become dilated, body temperature rises, noticeable sweat is present, designed to cool the body

dermal blood vessels will constrict, and skin temperature will drop to slow passive heat loss

respond to stimuli from outside of body, like temperature and touch/pressure

respond/sense to painful stimuli

major skin cancers (3):

least malignant and most common

second most common type, can metastisize,

cancer of melanocytes

epidermal damage only

epidermal and upper dermal damaged

entire thickness of skin, nerve endings are destroyed