Red Blood Cell Production Quiz

During later embryonic life at age 20, bone (whether flat or long) begins to produce ______

R.B.C. are produced during early embryonic life by the yolk sac, the spleen and ______ begin to produce R.B.C.s

The increase of R.B.C.s count under normal value is called ______

Flat bones produce R.B.C., such as bones of the ______, ribs and sternum