RBC Test Exam 1 Questions Solved 100%

What is an erythrocyte? - Answer A red blood cell What is erythropiesis? - Answer Making of RBC Where does erythrosiesis take place? - Answer Bone marrow Order of precursor cells - Answer MPSC, Rubriblast, prorubricyte, rubricyte, metarubricyte, reticulocyte, erythrocyte Why does a RBC have a limited life span? - Answer No nucleus which means no cell functions. (Membranes become less flexible and become destroyed by spleen) Erythropoietic process - Answer 1. Gradual Decrease in size 2. Decrease in basophillic cytoplasm (Gets lighter as it gets older) 3. Increase in density of the chromatin (nucleus gets darker) 4. Loss of nucleus Write what you know about Diapedisis - Answer Proestrogen bleeding occurs in response to estrogen levels. First, high estrogen levels makes the dog go into proestrus, then the RBC squeeze thru the pores of the capillary walls. What does an erythrocyte do? - Answer Carrier of O2 and CO2 Where is RBCs removed? - Answer By the RES (reticulo-endothelial system) What is the composition of hemoglobin - Answer 4 heme molecules contain 1 iron atom each Globin - two pairs of polypeptide chains Porphyrin Ring What are polypeptide chains made of? - Answer Amino Acids Compare a PCV to Machinery - Answer PCV - Cheap, fast, pretty accurate, for small amount of blood Machinery - More accurate, reproducible, fast What is plasma trapping? - Answer When the centrifuge is spinning too slowly and traps the plasma and other cells and falsely elevates the PCV What does ESR stand for? - Answer Erythrocyte Sedimentation Rate What is ESR? - Answer RBC settling by gravity Is ESR used in Vet Medicine? - Answer No, Because it is too time consuming What happens to PCVs in young animals? - Answer Young animals may have anemia due to poor iron diets in nursing animals What is normocytic? - Answer Normal size What is macrocytic? - Answer Larger cell What is microcytic ? - Answer Smaller cell What is polychromasia? - Answer Multicolored - purple What is normochromic? - Answer normal color What is hypochromic? - Answer pale in color What is hyperchromic? - Answer dark in color What is anisocytosis? - Answer Abnormal variation in cell size What is poikilocytosis? - Answer abnormal variation in cell shape