Gap Junctions, Tight Junctions, Desmosomes...

[determinat0r]

Does anyone know what types of tissues each of these are largely associated with? All I know are that gap junctions are found largely in the heart and tight junctions in the epithelial skin. Any help is appreciated.

[DeeDoc]

Google it?

[determinat0r]

I tried that...no success so far unfortunately. I remember reading it in my old physiology textbook (which I sold)

[aaronjw]

Mainly epithelial but also in excitable's

[phy241]

Make sure you know that desmosomes are associated with skin or epithelium and plasmodesmata are associated with plants, something like that showed up on my american DAT

[aaronjw]

Sorry, I could have elaborated when I wrote my post earlier - was on my ipad and on the treadmill.

 

Desmosomes are most abundant in cells subject to stretching - skin, heart, etc. (so epithelial and cardiac muscle tissues)

 

Tight Junctions are found primarily in sheets of epithelial tissues and for these passage across much take place through the cell - not between them

 

Gap Junctions are abundant in smooth and cardiac muscle and in nonmuscle tissue, permit unrestricted passage of small nutrient molecules between cells.

 

 

Hope that helps?

[determinat0r]

Thanks aaron! Much clearer now