Type of Cell Junctions - Tight and Adherens Junctions

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Many tissues contain in tercellular junctions between cells.
1. Tight junction
2. Adherens junction
3. Desmosome
4. Hemidesrnosome
5. Gap junction

1. Tight junction
• Web-like strips of proteins fuse together adjacent plasma membranes.
• Tight junctions prevent the transport of the contents of organs such as the intestines, urinary bladder, and stomach into the blood or surrounding tissues.

2. Adherens junction
• Anchored to a dense plaque of proteins inside the cell are transmembrane proteins that connect adjacent cells together.
• Additionally, microfilaments extend from the plaque into the cytosol. • Adhesion belts help resist separation of epithelial tissues.

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