How eucaryotic cilia and flagella move

Structure of eucaryotic cilium and flagellum

they are extensions of the cell and bounded by the plasma membrane

they have microtubules that go the length of the cilium or flagellum

they have microtubule dependent molecular motors (dynine)

Dynine arms connect one set of circumferential microtubules to the adjacent set


Dynine arms have ATPase activity

when dynine arms use ATP, microtubules doublets slide past each other

When microtubules slide past each other the flagella changes shape


When flagella or cilia change shape the cell moves