Question

The lifespan of a platelet is
(a) 8-9 days
(b) 9-12 days
(c) 20-30 days
(d) 90 days

Answer 1

It's a segment of blood whose capacity is to respond to bleeding from vessel injury by clustering, subsequently starting blood coagulation. The lifetime of individual platelets is controlled by the interior apoptotic regulating pathway.

Complete answer:
Platelets are little blood cells that help our body structure clots to stop bleeding. On the off chance that one among our veins gets harmed, it conveys signs to the platelets. The platelets then rush to the location of the injury and form a plug (clot) to repair the damage. Platelets are made in our bone marrow alongside your white and red blood cells. Our bone marrow is the spongy center inside your bones. Another name for platelets is thrombocytes. Healthcare providers usually call a clot a thrombus. Whenever platelets are made and coursed into our circulatory system, they live for 8 to 9 days.

Additional information:
Low platelet concentration is named thrombocytopenia and is thanks to either decreased production or increased destruction. Raised platelet concentration is named thrombocytosis, and is either intrinsic, receptive (to cytokines), or on account of unregulated creation: one among the myeloproliferative neoplasms or certain other myeloid neoplasms. A disorder of platelet function is thrombocytopathy.

So the correct answer to the above question is ‘8-9 days’.

Note: One major function of platelets is to contribute to hemostasis: the process of stopping bleeding at the site of interrupted endothelium. They gather at the location and unless the interruption is physically overlarge, they plug the opening. To begin firstly, platelets join to substances outside the intruded on endothelium: adhesion. Second, they modify the shape, activate receptors, and secrete chemical messengers: activation. Third, they hook up with one another through receptor bridges: aggregation.