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Cell Junctions and their Functions

Cell Junctions and their Functions. By Jennifer Romero and Endy Hernandez. Cell Junctions. -Intercellular bridges located between the cells of animals -2 major types. Gap Junction. -Made of 6 proteins called connexons -Connect the cytoplasm of adjacent animal cells

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Cell Junctions and their Functions

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  1. Cell Junctions and their Functions ByJennifer Romero and Endy Hernandez

  2. Cell Junctions -Intercellular bridges located between the cells of animals -2 major types

  3. Gap Junction -Made of 6 proteins called connexons -Connect the cytoplasm of adjacent animal cells -Permit free passage of molecules

  4. Plasmodesmata • Fine strands of cytoplasm • Connects cytoplasm of cell wall to that of its neighbors • Extension of plasma membrane • Proteins regulate permeability • Communication and transportation • Primary pit fields

  5. Tight Junctions -Belts of protein that close extracellular space -Prevent particles from going through the opening of 2 adjacent cells

  6. Gap and Tight Junctions Side to Side

  7. Desmosomes • Holds cells together • Attached to filaments of keratin in cytoplasm • Contains calcium molecules • Aid in electro-chemical communication between adjoining cells • Common in epithelia

  8. Summary Gap Junctions Plasmodesmata Tight Junctions Desmosomes

  9. Works Cited • kimball, J. "Junctions between cells." users.rcn.com. N.p., 17 feb 2011. Web. 16 Sep 2013. <http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/J/Junctions.html>. • Hannahs, Greg. "Plasmosdesmata." biology.kenyon.edu. N.p., n.d. Web. 16 Sep 2013. <http://biology.kenyon.edu/edwards/project/greg/pd.htm>. • Whitmer, Phil. "What Are Cell Junctions?." ehow. N.p.. Web. 16 Sep 2013. <http://www.ehow.com/info_8093238_cell-junctions.html>. • “Junctions Between Cells Simplified.” About Dbriers.com N.p. Web. 16 September 2013. http://www.dbriers.com/tutorials/2012/12/junctions-between-cells-simplified/

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