Which cell removes worn-out erythrocytes from the circulation?

1. Worn-out erythrocytes are phagocytized by macrophages, which sit mainly in the bone marrow, liver and spleen. 2. The macrophage is a myeloid phagocytic cell. 3. The monocyte is the circulating precursor, and it only takes the name macrophage once it has left the bloodstream, which makes it the closest trap. 4. The myeloblast is an immature granulocyte precursor and the mast cell arises from a different lineage, so neither clears red cells. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.3 Erythrocytes_