Epithelium Part 2:

Question 1

Define the difference in cell regeneration is monostratified vs stratified epithelium.

Answer 1

In a monostritified epithelium when a cell dies a neighbour will fill the gap by mitosis
In stratified, the cell is replaced from the base and it rises up

Question 2

What are microvilla?
Where are they found, what is their length, what are they formed from and what is their function

Answer 2

Microvillosites -> apical side, short, come from plasmic mbr, increase absorption area

can form bordure en brosse or plateau striee

Question 3

What are cilia? Length and function

Answer 3

Longer than microvilla
Circulation du mucus et élimination des déchets

Question 4

What are the 3 lateral cell junctions?

Answer 4

Tight junction

Binding Junctions: Adherence and desmosomes

Gap Junctions

Question 5

What is a complexe de jonction?

Answer 5

When we find

Jonction serre
adtherente
desmosome

in that order

Question 6

What separates epithelial cells from conjuctive tissue?

Answer 6

Lame Basale (basal laminae)

Question 7

What are 2 main components of basal laminae?

Answer 7

Integrind and collagen Type IV