Lecture 1 & 2 Cell Signaling

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24 Terms

1

Cell Junction

are specialized strucutres comprised of many different protiens that hold cells together

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2

Tight Junction

from the tight seals (barrier) between cells, which helps ensure directional movement of material

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3

Gap Junction

form “tunnels” called channels so that adjacent cells can communicate by exchanging small molecules, electrical impulses, ect

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4

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

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5

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

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6

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

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7

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

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