You need to login first

Login information

Haven't yet registered?

×
* * * *

Support Us

If you found our community helpful, your small donation will continue to help us reach more students around the globe. You may also like us on Facebook or follow us on Twitter.
Pages: 1     Go Down
  New Topic  |  Print  
What are intercellular junctions and why are they important?
Read 7332 times | 1 Replies | Average Rating: Not Rated Yet
Morbesety
Jellyfish
*
Posts: 7
Points: 135
Rep:  +0   -0


For a more comfortable homework help experience, try HomeworkClinic.com.
What are intercellular junctions and why are they important? also

Contrast plasmodesmata, tight junctions, desmosomes, and gap junctions.

thanks!~

Report this PostReport Abuse
replies
Reply# 1
*
Posts: 12343
Points: 4968
Rep:  +706   -2

4 years ago

Hey,

A cell junction is a type of structure that exists within the tissue of a multicellular organism. They consist of protein complexes and provide contact between neighbouring cells, between a cell and the extracellular matrix, or they build up the paracellular barrier of epithelia and control the paracellular transport.

Plasmodesmata are microscopic channels which go across the cell walls of plant cells, enabling transport of water and minerals and communication between them. These junctions are found only in plants, not animals cells.

Tight junctions are the closely associated areas of two cells whose membranes join together forming a virtually impermeable barrier to fluid. It is a type of junctional complex present only in vertebrates.

Desmosomes are molecular complexes of cell adhesion proteins and linking proteins that attach the cell surface adhesion proteins to intracellular keratin cytoskeletal filaments.

A gap junction is a specialized intercellular connection between a multitude of animal cell-types. It directly connects the cytoplasm of two cells, which allows various molecules and ions to pass freely between cells. This is very similar to plasmodesmata that are found in plants.



Report this PostReport Abuse
 
Pages: 1     Go Up New Topic Print
 
Related Topics
Replies Author Last post
1
Reply
Cell Biology | Started by colleen | Views: 727
Last post Last post by bio_man
3 years ago
1
Reply
General Biology | Started by txstar01 | Views: 246
Last post Last post by doubleu
A year ago
4
Replies
Cell Biology | Started by cmeister703 | Views: 357
Last post Last post by padre
10 months ago
1
Reply
Zoology and Plant Biology | Started by dbassan | Views: 40
Last post Last post by tryingtopass
7 months ago
Note: This topic is currently locked from adding new posts. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more options.