epithelial tissue Flashcards
types of tissues
nervous, muscle, epithelial, connective
epithelial tissue
forms boundaries btwn diff environments
lines internal passageways
forms secretory glands
outside/ surface side of the tissue lined with microvilli
apical
what is apical lined with
microvilli
what is microvilli
organelle that maxes surface area to increase secretion/absorption
what is the inside/ closer to the underlying connective tissue of the epithelial tissue
basal
polarity? of the epithelial tissue
apical and basal
epithelial tissues are avascular which means…
they have no blood cells
how do epithelial tissues receive nutrients?
they get it through diffusion from other tissues
epithelial tissues are innervated which means..
supplied with nerves
simple meaning
single layered
stratified meaning
multi-layered
squamous
flat-shaped cell
cuboidal
boxy-shape cell
columnar
long-shape cell
where are the simple squamous cells?
lining of body cavities and blood vessels
where are the simple cuboidal?
kidneys + gland tissues
where are the simple columnar?
stomach + intestines
where are the stratified squamous?
skin (epidermis)
where are the stratified cuboidal
excretory ducts (saliva; sweat)
where are the stratified columnar?
eyelid
where are the pseudo stratified columnar?
lines upper respiratory