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15 cards from this deck
Physical barrier preventing pathogens entering body
Epidermis
Dead cells forming impermeable barrier
Keratin
Melanin production, skin colour, UV protection
Collagen and elastin
Strength and elasticity to skin
Secrete sweat to cool body
Exocrine glands
Sebum
Oily substance preventing skin drying
Erector muscles
Contract, hair stands up, traps warm air for insulation
Vasodilation
Fat for insulation and energy
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