the cell, cell membrane, and tissues

epithelial tissues

covers organs, forms the inner linings of body cavities, and lines hollow organs

simple squamous

single layer of thing, flattened cells

simple cuboidal cells

single layer of cube-shaped cells

simple columnar

single layer of cells that are longer than wide

pseudostratified columnar

appear to be stratified but are not

stratified squamous

layers of thing, flattened cells

stratified cuboidal

layers of cube-shaped cells

stratified columnar

top layer is composed of columnar cells, while the lower layers are cuboidal cells

transitional

layers or irregular shaped cells

glandular

cells that are specialized to produce and secrete substances

basement layer

anchors dermis to epidermis and separates them

keratinocytes

makes up 90% of epidermis

melanocytes

produce melanin - pigment that contributes to skin color and absorbs UV light

langerhans

involved in immune response

tactile epithelial cells

has a tactile disk (involved in sensory detection of touch)

malignant melanoma

most aggressive form, can kill within months

basal cell carcinoma

most common, UV damage to DNA in basal cells in the epidermis

squamous cell carcinoma

second most common, abnormal accelerated growth of squamous cells

rule of nines

• divides the body into 11 areas, each accounting for 9% of the total body area

• this determines the extent of a burn on the the total body surface area