Epithelial tissue

Question 1

Function of epithelial tissue

Answer 1

provide structural/functional barrier between biological compartments. Provides protection, allows diffussion, absorbtion and secretion

Question 2

name the 2 surfaces of epithelial cells

Answer 2

basal (attatched to BM) and apical (free)

Question 3

describe the classifation of epithelial cells in terms of layers

Answer 3

Simple- 1 layer (diffsuion, absorbtion, secretion)
stratified- 2 or more layers ( protection)
pseudo startified- single layer that appears stratified

Question 4

describe the classifation of epithelial cells in terms of shape

Answer 4

squamous- width greater than height
cubodial- square
columnar- height greater than width
transitional- chnages shape to accomodate stretching

Question 5

describe the classifation of epithelial cells in terms of specialisation

Answer 5

microvilli
. tiny projections of plasma membrane that increase apical surface area for absorbtion
cili
.long motile projections that beat rythmically to move fluid/mucus
keratin
. confers mechanical strength, physical protection

Question 6

what is the name for epithelial cancer

Answer 6

carcinoma