Platelets are derived from cells called:
a. Thromboblasts
b. Leukoblasts
c. Megakaryocytes
d. Thrombokaryocytes

Verified step by step guidance

1. Understand the role of platelets in the body: Platelets are small, disc-shaped cell fragments that play a crucial role in blood clotting and wound healing.
2. Learn about the origin of platelets: Platelets are derived from larger precursor cells found in the bone marrow.
3. Identify the precursor cell type: The precursor cells responsible for producing platelets are called megakaryocytes. These cells undergo a process called fragmentation to release platelets into the bloodstream.
4. Clarify the terminology: Thromboblasts, leukoblasts, and thrombokaryocytes are not correct terms for the precursor cells of platelets. Megakaryocytes are the correct answer.
5. Review the process: Megakaryocytes develop in the bone marrow, and their cytoplasm fragments into small pieces, which become platelets that circulate in the blood.

Key Concepts

Platelet Production

Platelets, or thrombocytes, are small cell fragments essential for blood clotting. They are produced in the bone marrow through a process called thrombopoiesis, where large precursor cells called megakaryocytes undergo fragmentation to release platelets into the bloodstream.

Megakaryocytes

Megakaryocytes are large bone marrow cells responsible for the production of platelets. They have a unique structure with a large nucleus and extensive cytoplasmic processes that extend into the blood vessels, where they shed platelets. Understanding their role is crucial for comprehending platelet formation.

Hematopoiesis

Hematopoiesis is the process of blood cell formation, occurring primarily in the bone marrow. It encompasses the development of all blood cells, including red blood cells, white blood cells, and platelets. This concept is fundamental to understanding how megakaryocytes fit into the broader context of blood cell production.