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Lab9_OCON - foreign invader or antigen trying to attack the...

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Caroline O’Connor Cell Physiology Lab 9 T.A. James Peterson Title: Hematopoietic Stem Cells and Adult Blood Cells 1.) Red blood cells, also called erythrocytes, were the most numerous in the smear. They were evenly stained pink, lacked nuclei, and had a biconcave shaped to provide the largest surface area for oxygen saturation. Their main function is to deliver oxygen from the lungs to the tissues. 2.) CELL TYPE NUMBER PERCENTAGE (DOUBLE) Neutrophil 21 42% Lymphocyte 29 58% Eosinophil 0 0% Basophil 0 0% Monocyte 0 0% These percentages are not completely consistent with what we learned in the lab. We would have expected to see the greatest amount of neutrophils, with lymphocytes following in number. It is not completely out of the ordinary that we did not visualize eosinophils, basophils, or monocytes, as these types of granulocytes function respectively to fight off parasites, aid in allergic reactions, and invade foreign invaders. The reason for elevated lymphocyte concentration could be due to a
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Unformatted text preview: foreign invader or antigen trying to attack the body; however, in this case we would have also expected to see elevated monocyte levels. Thus, the aberrations in our data were probably to do human error in counting, or chance. 3.) The erythroblast was the most common cell type seen in the bone. This is because erythroblasts eventually mature into erythrocytes, which have the highest oxygen carrying capacity. 4.) 4 megakaryocytes were visualized in the second field. They were very large in size, contained a fragmented nucleus, and stained palely pink with the eosin. 5.) We were able to visualize mostly erythroblasts and a few myelocytes. These two were easy to distinguish from one another in that the erythroblasts did not have nuclei. Furthermore, the myelocytes were larger in size and appeared to have a phagocytic form to them....
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