ANATOMY

Detailed explanation-1: -Platelets, also known as thrombocytes, are blood cells. They form in your bone marrow, a sponge-like tissue in your bones. Platelets play a major role in blood clotting. Normally, when one of your blood vessels is injured, you start to bleed.

Detailed explanation-2: -Platelets are pieces of very large cells in the bone marrow called megakaryocytes.

Detailed explanation-3: -When there is an injury, platelets release molecules into the blood that help turn on clotting factors. One important clotting factor is fibrin, a long, thin, and sticky protein. When it is turned on, it forms a mesh to hold the platelet plug in place.

Detailed explanation-4: -The main job of platelets, or thrombocytes, is blood clotting. Platelets are much smaller in size than the other blood cells. They group together to form clumps, or a plug, in the hole of a vessel to stop bleeding.

Detailed explanation-5: -Platelets are formed from the cytoplasm of megakaryocytes (MKs), their precursor cells, which reside in the bone marrow (Pease, 1956). MKs are the largest (50–100 µm) and also one of the rarest cells in the bone marrow; MKs account for ∼0.01% of nucleated bone marrow cells (Nakeff and Maat, 1974).