Question

Blood platelets are formed from
A) Thrombocytes
B) Megakaryocytes
C) Leucocytes
D) Erythroblasts

Answer 1

Whenever we get injured and start bleeding, our immune system gets activated as a result of which the white blood cells along with the bone marrow form fragments of cells that help to heal the injured area sooner.

Complete answer:
Before answering this question we should know about the Platelets. The platelets are small blood cells that are involved in the blood clotting process to stop the bleeding whenever we get any cut in our body. If any of our blood vessels get damaged, it sends a signal to the platelets, then the platelets form a clot to repair the damage and this complete process of spreading throughout the surface of the damaged vessels is termed as adhesion. When the platelets reach the injured sites, they release a sticky tentacle that helps them to get adhere together and release chemical signals to attract more platelets and the addition of more platelets pile up to form clot is considered as the aggregation process.
The platelets are made of bone marrow in association with the white blood cells and another name of platelets is thrombocytes. After the platelets circulate inside our bloodstream they stay for 8-10 days.
Now, the platelets are formed in the bone marrow by large cells of bone marrow termed as megakaryocytes. The megakaryocytes produce into giant cells through the fragmentation process those results in the release of 1,000 platelets per megakaryocyte. The hormone that dominates the megakaryocyte control is termed as thrombopoietin.

Thus, the correct answer is ‘B’. Megakaryocytes.

Note: Thrombocytopenia is a condition where the platelets count is very low inside our body or we can say the platelets life span is very less. In this condition, bleeding can occur as a bruise or in other words it is called internal bleeding. The essential thrombocythemia is a condition where too many platelets are formed. In this condition, the person may suffer from blocking of blood supply to the brain due to clotting.