Histology Flashcards
What epithelium does Skin have?
Stratified squamous keratinising epithelium. With a thick layer of fully keratnised squmes which stain bright pink (HandE)
Name Three stains
H and E Alican Blue Van Gieson
What does H and E stain
Stains cell nuclei blue and cytoplasm pink collagen and elastic also stain pink. Water extra cellular jelly does not stain at all - not spaces
What is simple epithelia
Single layer of cells
Stratified epithelia is?
Many layers of cells
Describe simple squamous epithelium
Single layer of flattened cells with paralell oval nucleus
describe Cubidal Epithelium.
Single layer of cells roughly square profile with a round nuclues.
Describe Simple Columnar
Single laer of cells taller than wide with an oval, perpendicular nucleus.
Name three examples of Simple columnar
Bronchus (with cillia) Small intestine Gall Bladder
What are regular finger like projections from the apical surface of absoprtative cells.
Microvilli.
Define Cilla
regular motile appendages on teh apical surfaces of cells of parts of the respiratory and female reproductve tracts.
Four features of stratified epithelia.
protective function Composed of many cells continaully being worn down worn away cells replaced from below
where is stratified epithlia located.
Found in areas where there is continuous abrasion.
Sub types of stratified are
Squamous: keratinised (skin) and non keratinised (mouth, oesophagus and vagina) Cuboidal: found in some large ducts.
Sub types of stratified are
Squamous: keratinised (skin) and non keratinised (mouth, oesophagus and vagina) Cuboidal: found in some large ducts.
