After erythrocytes have circulated for about 120 days, they are removed by macrophages, which are mainly in the:
A) liver.
B) spleen.
C) appendix.
D) bone marrow.

Name: After erythrocytes have circulated for about 120 days, they are removed by macrophages, which are mainly in the: A) liver. B) spleen. C) appendix. D) bone marrow.
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Quizplus · Accepted Answer

Macrophages responsible for removing old erythrocytes are mainly located in the spleen, which filters blood and removes damaged or aged cells from circulation.

After Erythrocytes Have Circulated for About 120 Days, They Are