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ch.8.2.adjacent cells connect and communicate
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Three types of cell-cell attachments
-tight junctions
-anchoring junctions
-gap junctions
Tight Junctions
-found in tissues
-tight seal allows nothing to seep through
-exs. epithelial cells (intestine), blood vessels
-if necessary they can loosen
Anchoring Junctions
-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
Gap Junctions
-holes or gaps in the plasma membraes
-allows adjacent cells to communicate
-gaps surrounded by proteins
-two come together form make continous hole
Plasmodesmata
-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.
Author
VickyMJ
ID
83759
Card Set
ch.8.2.adjacent cells connect and communicate
Description
final exam
Updated
2011-05-04T19:52:53Z
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