Megakaryocytes ( from the Greek megas, large carion, core: 41 multinucleated giant cell; they are a very conspicuous cells that are part of the fabric of the bone marrow and other tissues hemocitopoyeticos hemocitopoyetico. It's a very large cell ( measures about 30 diameter ¼m ) polyploid, and single-core large lobed, with numerous branches.The participation of the Megakaryocyte in hemopoyesis ( formation of elements formed blood ) It is limited to the production of platelets or thrombocytes. To form platelets, megakaryocytes release fragments of their cytoplasm directly to a sine wave 40 glass; porous glass ) thus passing into the bloodstream.The Megakaryocyte mother cell maturation process, subsequently to platelets is called Thrombopoiesis