This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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Here are the answers to your physiology questions: Station 7: Total WBC Count Calculations Question A: If you count a total of 160 cells in the 4 large corner squares, calculate the Total WBC count. Step 1: Calculate the average number of cells per square. Average cells per square = 160 cells4 squares = 40 cells/square Step 2: Determine the volume of one large corner square. Volume of one square = 1 mm × 1 mm × 0.1 mm = 0.1 mm^3 Step 3: Use the formula for Total WBC Count. Total Count = Average Cells × Dilution FactorVolume of one square Given Dilution Factor = 20 Total Count = 40 cells × 200.1 mm^3 Total Count = (800)/(0.1 mm)^3 Total Count = 8000 cells/mm^3 Total Count = 8.0 × 10^3 cells/mm^3 Question B: Why must you wait 2-3 minutes after mixing blood with Turk's fluid before charging the chamber? To allow the glacial acetic acid in Turk's fluid enough time to completely lyse (break open) the red blood cells (RBCs) so they don't obscure the white blood cells (WBCs) during counting. Station 8: The "Blood Smear" Quality Question A: Name two common errors in making a blood smear that lead to a "poor tail." 1. Pushing the spreader slide too fast. 2. Using a spreader with a chipped or dirty edge. Question B: Where on the slide should you perform a Differential Leukocyte Count (DLC)? The monolayer, which is the area just behind the "feathered edge" where the cells are close together but not overlapping. Question C: Identify a condition where you would see a "Shift to the Left" in a neutrophil count. Acute bacterial infection, which is characterized by the presence of immature "band" neutrophils. Station 9: ESR Mechanisms Question A: What is the primary anticoagulant used in the Westergren method? 3.8% Sodium Citrate (in a ratio of 1 part citrate to 4 parts blood). Question B: Explain why a patient with Spherocytosis (round RBCs) would have a very low ESR. Spherocytes are abnormally round and rigid red blood cells. Their spherical shape prevents them from forming rouleaux (stacks of RBCs) effectively. Rouleaux formation is crucial for increasing the sedimentation rate, so without it, spherocytes settle much slower, resulting in a very low ESR. Last free one today — make it count tomorrow, or type /upgrade for unlimited.