Epithelial Tissue - A&P

where can you find epithelial tissue

on all body surface, internal and external.

cells are…

tightly packed

does epithelial tissue have a blood supply

no - avascular

basal surface

attaches to underlying connective tissue at the basement membrane

basement membrane

thin molecular protein - marks basal surface

apical surface

the “free” surface, usually facing an open space

Lumen

any open space or cavity in a tubular structure or sac

goblet cells

secrete mucus, appear when area is exposed to air

simple

1 layer

stratified

2 or more layers

pseudostratified

appears as multiple layers, but actually only 1

squamous

flat cells

cuboidal

cube shaped cells

columnar

column shaped cells