KBC 13 Offline Quiz (September 14, 2021): What is the average lifespan of Platelets in our body?
a. 10-15 days
b. 5-10 days
c. 15-20 days
d. 10-12 days
Answer: b. 5-10 days
The lifespan of platelets is very short and they survive only about ten days before they are removed from the bloodstream. Platelets are tiny blood cells and they help our body form clots to stop bleeding. When blood vessels gets damaged, it sends out signals to the platelets. The platelets then rush to the site of damage and form a plug (clot) to fix the damage. Formed in bone marrow along with white and red blood cells, platelets are also called thrombocytes. They look like a plate under a microscope. The normal platelet count is 150,000 to 450,000 platelets per microliter of blood. In some people, the platelet counts is more than 1 million.
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