Question

Thromboplastin required for blood clotting at the place of injury is released by___ .

Answer 1

Thrombocytes - irregularly shaped, disk like cytoplasmic fragment of a megakaryocyte that is shed in the marrow sinus and subsequently found in the peripheral blood, where it functions in clotting at the place of injury. A platelet contains granules in its central part (granulomere) and, peripherally, clear protoplasm (hyalomere), but no nucleus, is about one third to one half the size of an erythrocyte, and contains no hemoglobin.