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epidermis

protects underlying structures from trauma

keratine

toughens cells of epidermis

sweat gland

secretes sweat that is involved in termoregulation

sebaceous gland

secretes sebum

sebum

keeps epidermis and hair shaft soft and flexible

arrector pili muscle

moves hair follicl

dermal blood vessels

thermoregularion

melanin

protects deeper structures from UV light

meissner's corpuscle

respond to light touch

pacinean corpuscle

respond to pressure (hard touch)

nails

protect distal end of finger and aid in picking things up

lanula

site of nail growth

hypodermis

fat storage; thermoregulation

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