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Cell communication (Direct communication (Desmosome
Joins (Anchor cells…
Cell communication
Direct communication
Desmosome
Joins
- Anchor cells together
- Attached to cytoskeleton
- Cadherins form links between plaques of individual cells
Gap junction
Communicates
- Channels or bridges between cells: connexins
- Allow small molecules + ions to pass between cells
- Small chemical and electrical signals e.g.
- Electrical signal smooth muscle
Tight Junction
Prevents
- Forms belt around cell, anchoring it to neighboring cells
- Not attached to cytoskeleton
- Belt stops membrane proteins moving past it
& stops diffusing molecules
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