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Multiple Choice

Megakaryocytes are bone marrow cells responsible for the formation of what?

Megakaryocytes in the bone marrow produce platelets. They extend cytoplasmic processes into nearby blood vessels and shed tiny fragments—platelets—into the bloodstream. Platelets are essential for hemostasis, forming the initial platelet plug and releasing factors that promote clotting. Red blood cells come from erythroid precursors, white blood cells from various myeloid/lymphoid lineages, and most plasma proteins are produced by the liver or by plasma cells, not by megakaryocytes.

Megakaryocytes in the bone marrow produce platelets. They extend cytoplasmic processes into nearby blood vessels and shed tiny fragments—platelets—into the bloodstream. Platelets are essential for hemostasis, forming the initial platelet plug and releasing factors that promote clotting. Red blood cells come from erythroid precursors, white blood cells from various myeloid/lymphoid lineages, and most plasma proteins are produced by the liver or by plasma cells, not by megakaryocytes.