Platelet Deficiency and Blood Clotting — NEET Biology
✅ Asked in NEET 2016Platelets also called thrombocytes, are cell fragments produced from megakaryocytes (special cells in the bone marrow). Blood normally contains 1,500,00-3,500,00 platelets mm-3. Platelets can release a variety of substances most of which are involved in the coagulation or clotting of blood. A reduction in their number can lead to clotting disorders which will lead to excessive loss of blood from the body.
The NCERT explicitly links reduced platelet count (thrombocytopenia) to clotting disorders, which NTA tested in 2016. Students often confuse this and think fewer platelets mean better clotting, when actually platelets are essential for clot formation. A reduction below the normal range (1.5-3.5 lakh/mm³) impairs coagulation, causing excessive bleeding. Remember: platelets release clotting factors and form the plug in blood vessels—fewer platelets = slower clotting = more bleeding. This concept appears straightforward in the paragraph, making it a direct recall question that tests your understanding of platelet function in hemostasis.
Name the blood cells, whose reduction in number can cause clotting disorder, leading to excessive loss of blood from the body. (NEET 2016 Phase 2)
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