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Cell Junction
are specialized strucutres comprised of many different protiens that hold cells together
Tight Junction
from the tight seals (barrier) between cells, which helps ensure directional movement of material
Gap Junction
form “tunnels” called channels so that adjacent cells can communicate by exchanging small molecules, electrical impulses, ect
Desmosomes
hold cells together like velcro; also allows material to move around in the intracellular space
________ link adjacent cells tightly but permit materials to move around them in the intracellular
The Extracellular matrix (ECM)
is a macromolecule-rich gel outside of cells
cells can move within a tissue by binding and reattaching of adhesion receptors to the ________
This is important for cells movement within developing embyos and for the spread of cancer cells
Integrals
are one type of adhesion receptors that can facilitate movement by binding and attaching to the extracellular matrix
All cells processes information from the environment when a ligand binds a receptor
Receptor
All cells processes information from the enviorment when a ligand binds a ______
To respone to a signals a cell must have a specific ____ molecules that can detect it
