Final answer:
The myeloblast is the precursor cell for granulocytes within the myeloid cell line. Myeloblasts differentiate into various types of granulocytes, which are a subtype of leukocytes that play a crucial role in the immune system.
Step-by-step explanation:
The precursor cell for granulocytes within the myeloid cell line is the myeloblast. These myeloblasts differentiate into various types of granulocytes, including neutrophils, eosinophils, and basophils, which are all important types of white blood cells that play a crucial role in the immune response. Consequently, the correct answer to the question is A) Myeloblast.
Hematopoiesis, the process of blood cell production, occurs primarily in the bone marrow. The myeloid stem cells are a type that gives rise to several formed elements in the blood, including erythrocytes (red blood cells), megakaryocytes (which produce platelets), and granulocytes.
Granulocytes themselves are a specific type of leukocyte or white blood cell, characterized by the presence of granules in their cytoplasm. These cells are essential for the body's defenses against infections and foreign substances.