While planning care for a newborn, the pediatric nurse recalls that the site of hematopoiesis in the fetus is the:
a. bone marrow.
b. kidney.
c. lymph nodes.
d. spleen.
ANS: D
Hematopoiesis is constantly ongoing, occurring in the liver and spleen of the fetus and only in bone marrow (medullary hematopoiesis) after birth. Fetal hematopoiesis does not occur in the bone marrow, kidney, or lymph nodes.
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