Cell Polarity? (1 Viewer)

[~shinigami~]

I'm having quite a difficult time finding information for this question. My basic histology book fails me.

"The fully differentiated odontoblast is a columnar shaped cell that shows polarity. What does “showing polarity” mean? Why do some types of cells have this characteristic appearance (polarity) whereas others do not?"

If anyone would care to help me out, I would much appreciate it. Thanks.

 

[Survivor39]

Showing polarity means cells have an apical and a basal surface that rest on a basal lamina. As to why some cells have a polarised appearance and others do not, I think it has to relate to their structure-function. For example, intestinal epithelial cells lining the intestine all showed a polarised structure. This structure forms a tight barrier (sealed by tight junctions) and prevent entry of luminal microorganisms and potential infectious agents.

 

[+Po1ntDeXt3r+]

happens in the renal cells too... the different surfaces allow for different functions..

in the kidneys its ions in one side.. and out the other... its kinda like a one way street sign..

usually provides tissue structure.. and orientates them...

happens in healing too

so is my understanding from 3rd yr medical histopath.. and robbins..

 

[~shinigami~]

Oooo I didn't realise people had answered my question. Thanks guys!!!