During second trimester of pregnancy, erythropoiesis occurs in the fetus primarily in?
Ans. (a) LiverSites of HaematopoiesisYolk sac at 2 weeksEarliest Hemoglobin to be formed isGower 1. This is followed by Gower 2 and finally Portland.In fetus in liver and partly spleen.HbF appears at 14 weeksAt birth it shifts to the bone marrowHbA appears at 38 weeksMISCELLANEOUS
Liver
Spleen
Red bone marrow
Lymph nodes
Blood: RBCs, Anemia, and Polycythemia