Answer the following statements true (T) or false (F)
1. Polycythemia can result from too little hemoglobin even if there is an adequate number of red blood cells.
2. Normally, about 55% of the blood volume is red blood cells.
3. If a test tube of blood is “spun down” in a centrifuge, the white blood cells and platelets form a layer called the buffy coat.
4. A person with polycythemia would have a red blood cell volume less than 45%.
5. A person with anemia might have a red blood cell volume as high as 65%.
1. FALSE
2. FALSE
3. TRUE
4. FALSE
5. FALSE
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A. placenta B. blastocyst C. trophoblast D. amnion E. chorion
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