BIOG221: Epithelial Tissues

Covers the types of epithelial tissues with their shape and function

simple

one layer

stratified

several layers

pseudostratified

is one layer, but looks like it is several layers

squamous

cells that appear squished or hexagonal

cuboidal

square shaped cells

columnar

long columns of cells

transitional

appear cuboidal, but squamous when stretched

simple squamous

allow materials to enter and exit; line blood vessels and heart

simple cuboidal

allow materials to enter and exit; located in the kidney tubes and ovary surface

simple columnar ciliated

moves mucous; located in bronchi

simple columnar non-ciliated

allow materials to enter and exit; located in the bladder

pseudostratified columnar

secretes and moves mucous; located in the trachea (ciliated) and the male urethra (non-ciliated)

goblet cells

create mucous, part of the pseudostratified columnar tissue

keratinized stratified squamous

abrasion resistance and protection; located on the palms and bottom of feet (thick), and the entirety of the skin (thin)

non-keratinized stratified squamous

resists abrasion and protects from pathogens, lacks a surface layer of dead cells; located in the mouth

stratified cuboidal

provides general protection; located in the glands