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causes skin to produce a precursor
molecule of vitamin D

is carried by blood to liver where it is modified

stimulates intestine to absorb calcium and phosphate (bone growth and muscle function)

Body temp. should be

is altered by changes in temp.

blood vessels in dermis dilate and heat is transferred from deep in tissues to skin and sweat is produced

blood vessels constrict to reduce blood flow to skin and heat is retained

damages only epidermis
redness, slight swelling, pain

heals within 2-3 days (usually no scar)
includes sunburns or exposure to cold

damages epidermis and upper dermis
redness, swelling, pain, blisters

heals in 2 weeks with some scarring

destroys epidermis and dermis
burned areas are cherry red to black
nerve endings are destroyed, thus burned area is not painful.

skin graft might be necessary because regeneration is not possible

full thickness burns , but they extend into deeper tissues such as muscles, bones and tendons.

appears dry and leathery.
- in sever cases, amputation is required.

burns are critical if: Over ___ of the body has 2nd degree burns

burns are critical if: Over ____ of the body has 3rd or 4th degree burn

burns are critical if: There are ______ degree burns of the face, hands, feet or genitals

burns are critical if: Burns affect the _____

burns are critical if: _________ burns have occurred

an itchy,red,peeling condition of the skin between the toesresulting from an infection with the fungus

are caused by inflammation of hair follicles and surrounding tissues commonly on the dorsal neck.

are cluster of boils often caused by the bacterium staphlylococcus aureus

small fluid-filled blisters that itch and sting,it is caused by human herpesvirus 1 infection

itching,redness and swelling of the skin,it is caused by exposure of the skin to chemicals

pink,fluid,raised lesions commonly around the mouth and nose that develop yellolw crust and eventually rupture,common in elementary school aged children

reddened epidermal lesion covered with dry,silvery scales yhat itch,burn,crack and sometimes bleed,chronic condition.

Most common cancer
Mainly caused by UV light exposure

they are more prone to skin cancer

cause tan and is associated with malignant melanomas

ray that causes sunburn

should block UVA and UVB rays

types of skin cancer

cells in stratum basale affected
- cancer removed by surgery

cells above stratum basale affected
- can cause death

arises from melanocytes in a mole
- rare type
- can cause death

malignant melanoma ABCDE

downy type of hair covering a fetus

oily coating when baby is born, white cheesy looking substance; it protects the baby skin while it is floating in its mom’s water filled sac.