Question

Formation of platelets is known as
a. Haemopoiesis
b. Thrombopoiesis
c. Hemolysis
d. None of the above

Answer 1

Hint: Platelets are also called thrombocytes, and they are also called ligation of cytoplasm from megakaryocytes, and a single megakaryocyte has the capability to divide and forms thousands of platelets or thrombocytes.

Complete answer:
- The process of formation of platelets or thrombolytic is called thrombopoiesis.
- Platelets are membrane-bound fragments, which are formed from the megakaryocytes.
- Megakaryocytes are produced from the stem cells, where stem cells of bone marrow are differentiated to form the hematopoietic stem cells, from which megakaryocytes form.
- Where this megakaryocyte in the presence of hormone thrombopoietin stimulates and forms the platelets by releasing the proto platelets that break up into numerous smaller and functional platelets.
- Platelets have a lifespan of 5 to 10 days.
- Each megakaryocyte produce 1000 to 3000 platelets on an average for one time,
- So many lakhs of platelets are produced daily in the body.
- Old platelets are undergoing Phagocytosis in the spleen.
- The major functions of the platelets are to stop bleeding, hemostasis, along with it also has a function of immunity.
- Platelets at the site of injury potentially modulate the inflammatory process.
- Any deficiency or dysfunction of Platelets results in abnormal bleeding and it may also cause bleeding disorders.
- An excessive number of platelets may cause arterial or venous thrombosis.

Hence, the correct answer is option (B).

Note: Low platelet count sometimes may cause bleeding, it requires platelet transfusion, and some drugs such as aspirin and some anti-inflammatory drugs can suppress the platelet formation in persons.