Question

The life span of thrombocytes is

• A. 4 to 5 weeks
• B. 3 to 4 weeks
• C. 3 to 7 days
• D. None of these

Answer 1

The correct option is C 3 to 7 days

The average life span of circulating platelets is 8 to 9 days. Life span of individual 3 to 7 days thrombocytes is controlled by the internal apoptotic regulating pathway, which has a Bcl-x_L timer. Old thrombocytes are destroyed by phagocytosis in the spleen and liver. So, the correct answer is "3 to 7 days.'