How Cells Move

Image: Three-part image

Long Description: Three-part drawing showing how the "feet" of a cell can make the cell move along a surface in 3 phases; 1) by "Extension" (in which the foremost "foot" detaches from the surface and extends forward); 2) by "Attachment" (in which the extended "foot" re-attaches itself in a new, more forward position; and 3) "Release" (in which the hind-most foot on the cell detaches from the surface to acommodate the cell's new forward position.)

Cells walk along body surfaces via tiny "feet," called focal adhesions, which connect with the extracellular matrix.

To move (extend, attach, release), what must cells exert?

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