Microtubules, being part of the cytoskeleton... help a cell maintain its shape.
Microtubules typically radiate outwards from the centre of the cell; a place called an MTOC or microtubule organizing centre. They are involved in kinetichore and spindle formation during mitosis. On...
Microtubules are one of the components of the cytoskeleton.
in the Golgi body
Microtubles originate in the Microtubule Organizing Center (MTOC). Or, more specifically, the Centrosome.