A tiny, disc-shaped piece of cell that's found within the blood and spleen. Thrombocytes are pieces of very large cells within the bone marrow called megakaryocytes. they assist form blood clots to slow or stop bleeding and to assist wounds heal. Having too many or too few thrombocytes or having platelets that don’t work as they ought to can cause problems. Checking the amount of thrombocytes within the blood may help diagnose certain diseases or conditions. Also called platelet. Thrombocytes also are called platelets and are cell fragments which circulate within the blood with a lifetime of about 10 days. the center of the night and morning hours are time of platelet activation, once they are often a causative factor of great disorder like in myocardial infarct or stroke.