ch.8.2.adjacent cells connect and communicate
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Three types of cell-cell attachments
- -tight junctions
- -anchoring junctions
- -gap junctions
- -found in tissues
- -tight seal allows nothing to seep through
- -exs. epithelial cells (intestine), blood vessels
- -if necessary they can loosen
- -These keep adjacent cells attached to each other using easily removable rivet-‐like joints
- -desmosomes: allow selective adhesion between cells
- -only adhire if matching desmosomes
- -holes or gaps in the plasma membraes
- -allows adjacent cells to communicate
- -gaps surrounded by proteins
- -two come together form make continous hole
- -analogous gap junctions in animal cells
- -holes between adjacent plant cells
- -ER from one cell can extend and connect with the ER in adjacent cells through plasmodesmata.
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