Hemocytometer and Blood Cell Counting Quiz

What is the primary purpose of a hemocytometer?

• To analyze DNA

• To test blood sugar levels

• To count blood cells

• To measure blood pressure

Which of the following is NOT required for the blood sample preparation?

• RBC pipette

• RBC diluting solution

• Anticoagulant

• Thermometer

What should you do if you accidentally draw too much blood into the pipette?

• Shake the pipette vigorously

• Add more diluting solution

• Use a filter paper to blot excess blood

• Discard the sample and start over

How is the blood sample mixed with the diluting solution in the pipette?

• By shaking the pipette

• By rotating the pipette horizontally

• By heating the pipette

• By using a magnetic stirrer

Which objective lens should you use first to locate the RBC counting squares?

• 4x

• 10x

• 40x

• 100x

What is the dilution factor used in the RBC count formula?

• 1000

• 100

• 500

• 200

What is the normal range of RBC count for adult women?

• 5.0 to 6.0 million cells/mm³

• 6.1 to 7.1 million cells/mm³

• 4.2 to 5.4 million cells/mm³

• 3.5 to 4.5 million cells/mm³

What condition is indicated by a low RBC count?

• Erythropenia

• Leukocytosis

• Polycythemia

• Thrombocytosis

What diluting solution is used for platelet counting?

• 1% sodium chloride

• 1% glucose solution

• 1% acetic acid

• 1% ammonium oxalate

Which of the following can cause a high platelet count?

• Hypoxia

• Dehydration

• Vitamin B12 deficiency

• Iron deficiency