18 Questions
What is the normal range of P.C.V for adult males?
47 ± 7%
What term is used to describe an increase in the volume of P.C.V above the reference range?
Polycythemia
Which condition is associated with an increase in hematocrit (PCV) value?
High Altitude
What type of anemia results from vitamin B12 and folic acid deficiency?
Megaloblastic Anemia
What condition results in an increased level of circulating red blood cells in the bloodstream?
Polycythemia
What causes microcytic hypochromic anemia?
Chronic blood loss
What is the main cause of bone marrow aplasia?
High-dose radiation or chemotherapy
What are primary polycythemias due to?
Acquired or inherited genetic mutations causing high levels of red blood cell precursors
What type of anemia makes the red blood cells fragile and prone to rupture easily through the capillaries?
Hemolytic Anemia
What condition causes an increase in erythropoietin (EPO) production?
Burn Injury
What is the term used to describe decrease in the volume of P.C.V below the normal range?
Anemia
What is the main function of Packed Cell Volume (Hematocrit) in the blood?
To reflect the volume of the red blood cells
What is the average number of Red Blood Cells (RBCs) per cubic millimeter in healthy men?
5,200,000 (±300,000)
Where are Red Blood Cells (RBCs) derived from?
Bone marrow
What causes the production of greatly increased numbers of erythrocytes?
Exposure to low oxygen for a long time
What is the average life span of Red Blood Cells (RBCs)?
120 days
What is the primary component that constitutes about 45% of the blood volume?
Erythrocytes
Which procedure involves sealing one end of a capillary tube with sealing clay?
Packed Cell Volume determination
Test your knowledge of packed cell volume (PCV), which measures the volume of blood made only by the blood cells per 100 ml of blood. This quiz covers concepts related to red blood cells, their structure, and their normal characteristics.
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