Epithelial Tissue

Question 1

What does the epithelial tissue cover?

Answer 1

covers ALL SURFACES

Question 2

what does the epithelial tissue derived from

Answer 2

from all embryonic layers

Question 3

what are the function of the epithelial tissue?

Answer 3

1. protection (a barrier b/w us & environment)
2. tissue absorption
3. secretion
4. sensory
5. specialized function

Question 4

what is the histology of the epithelial tissue?

Answer 4

1. closely grouped cells w/little or no intercellular substance
2. capable of renewal
3. bound together by BOTH cellular junctions
   
   1. desmosomes
   2. hemi desmosomes
4. avascular (does not have circulation)

Question 5

Epithelial tissue lines different parts of your body, ______ and ______ so it comes from all 3 embryonic layers.

Answer 5

internally; externally

Question 6

how does the connective tissue renew?

Answer 6

the connective tissue is capable to renew through diffusion of a joining connective tissue, BUT, itself it does not have direct circulation

Question 7

what is meant by desmosomes?

Answer 7

epithelial cell to an epithelial cell; binds to each other but they also have to bind to a basement membrane

Question 8

what is meant by hemi desmosomes?

Answer 8

a connective tissue attachment b/w cellular and non cellular structure (an attachment b/w living and a non-living)
(e.g. gingival epithelium to the enamel)

Question 9

what is meant by avascular?

Answer 9

does not have circulation