epithelial tissue Flashcards
epithelial tissue
covers body surfaces and lines hollow organs, cavities, ducts. allows body to interact with external and internal environments
simple squamous
single layer of flat cells nucleus is flattened and oval or spherical
simple cuboidal
single layer cube shaped cells with round centrally located nucleus
non ciliated simple columnar
single layer with oval nuclei they are long rectangular round shaped
stratified squamous
two or more layers. apical layers are squamous but deeper layers are cuboidal or columnar
stratified cuboidal
two or more layers of cell, apical layer cells are cube shaped (no more than 3)
stratified columnar
only apical layer has columnar shaped cells, deeper layers are irregular shaped
stratified transitional (transitional)
has variable appearance and diff layers. un stretched state appears cuboidal. when stretched appears squamous
non ciliated pseudostratified columnar
appears to have several layers bc some cells do not extend to surface but only has one nucleus at diff layers
exocrine grandular
produce substances such as sweat to lower body temp, oil, earwax. looks like pineapple with cherries, donut shaped with stratified cuboidal like structures inside
endocrine grandular
maintain homeostasis through hormone regulation round shaped with simple cuboidal like layer
ciliated simple columnar
single layer with oval nuclei they are long rectangular round shaped fringe at top layer
ciliated pseudostratified columnar
appears to have several layers bc some cells do not extend to surface but only has one has fringe at top layer