Packed Cell Volume Count (Hematocrit) in Human Physiology

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What is the Packed Cell Volume (P.C.V) a measure of?

The volume of red blood cells in the blood (correct)

The total volume of blood in the body

The volume of white blood cells in the blood

The volume of plasma in the blood

What is the average number of red blood cells per cubic millimeter in healthy men?

4,500,000 (±200,000)

4,700,000 (±300,000)

5,500,000 (±200,000)

5,200,000 (±300,000) (correct)

Where are red blood cells derived from?

Spleen

Bone marrow (correct)

Lungs

Liver

What is the life span of a red blood cell?

120 days Signup and view all the answers

What causes the production of greatly increased numbers of erythrocytes?

Low oxygen exposure for a long time Signup and view all the answers

What is the procedure for measuring Packed Cell Volume (P.C.V)?

Puncturing the thumb and allowing the blood to enter a capillary tube Signup and view all the answers

Which condition is characterized by an increase in the volume of P.C.V above the reference range?

Dehydration Signup and view all the answers

What is the term for a decrease in the volume of P.C.V below the normal range?

Anemia Signup and view all the answers

What type of anemia results from vitamin B12 and folic acid deficiency?

Megaloblastic Anemia Signup and view all the answers

Which type of anemia is characterized by hereditary disorders that make the cells fragile, causing them to rupture easily?

Hereditary spherocytosis Signup and view all the answers

What is the condition that results in an increased level of circulating red blood cells in the bloodstream?

Polycythemia Signup and view all the answers

What causes primary polycythemias?

Acquired genetic mutations Signup and view all the answers

What is the term for a deficiency of hemoglobin in the blood caused by too few red blood cells or too little hemoglobin in the cells?

Anemia Signup and view all the answers

Which condition is characterized by an increase in hematocrit, hemoglobin, or RBC?

Polycythemia Vera Signup and view all the answers

What is the term for chronic blood loss resulting in RBCs being smaller than normal and having too little hemoglobin inside them?

Blood Loss Anemia Signup and view all the answers

What is the average volume of red blood cells per cubic millimeter in healthy women?

4,700,000 (±300,000) Signup and view all the answers

What is the term for the process that causes the growth induction and production of greatly increased numbers of erythrocytes?

Hypoxia Signup and view all the answers

What is the term for the condition characterized by an increase in hematocrit, hemoglobin, or RBC?

Polycythemia Signup and view all the answers

What is the term for the chronic blood loss resulting in RBCs being smaller than normal and having too little hemoglobin inside them?

Microcytic hypochromic anemia Signup and view all the answers

Where are red blood cells derived from?

Pluripotential hematopoietic stem cells in the bone marrow Signup and view all the answers

What is the condition that results in an increased level of circulating red blood cells in the bloodstream?

Polycythemia Signup and view all the answers

What is the normal range of P.C.V for adult male?

47 ± 7% Signup and view all the answers

What is the normal range of P.C.V for adult female?

42 ± 5% Signup and view all the answers

What is the term for an increase in the volume of P.C.V above the reference range?

polycythemia Signup and view all the answers

What is the term for a decrease in the volume of P.C.V below the normal range?

anemia Signup and view all the answers

What are the conditions associated with an increase in Hematocrit (PCV) value?

Dehydration, Burn Injury, Polycythemia Vera, High Altitude, Conditions associated with hypoxia Signup and view all the answers

Name the conditions associated with a decrease in Hematocrit (PCV) value.

Pregnancy, Renal failure, Bone marrow failure, Hemolytic anemia, Chemotherapy Signup and view all the answers

What is the term for a deficiency of hemoglobin in the blood caused by either too few red blood cells or too little hemoglobin in the cells?

Anemia Signup and view all the answers

What is the condition that results in an increased level of circulating red blood cells in the bloodstream?

Polycythemia Signup and view all the answers

What is the term for lack of functioning bone marrow?

Aplastic Anemia Signup and view all the answers

What type of anemia results from vitamin B12 & folic acid deficiency?

Megaloblastic Anemia Signup and view all the answers

The Packed Cell Volume (P.C.V) measures the volume of both plasma and blood cells in the blood.

False Signup and view all the answers

The average number of RBCs per cubic millimeter is higher in women than in men.

False Signup and view all the answers

Erythrocytes have a fixed shape and do not change as they move through capillaries.

False Signup and view all the answers

RBCs production is induced by exposure of the blood to high oxygen levels for a short time.

False Signup and view all the answers

The life span of a red blood cell is approximately 90 days.

False Signup and view all the answers

The volume of the P.C.V does not reflect the volume of the red blood cells.

False Signup and view all the answers

An increase in the volume of P.C.V above the reference range is termed as anemia.

False Signup and view all the answers

Megaloblastic anemia results from vitamin B12 and folic acid deficiency.

True Signup and view all the answers

Hemolytic anemia is characterized by hereditary disorders that make the cells fragile, causing them to rupture easily as they go through the capillaries.

True Signup and view all the answers

Bone marrow aplasia means a lack of functioning bone marrow.

True Signup and view all the answers

Polycythemia results in a decreased level of circulating red blood cells in the bloodstream.

False Signup and view all the answers

Anemia means a deficiency of hemoglobin in the blood caused by too few red blood cells or too little hemoglobin in the cells.

True Signup and view all the answers

A person exposed to high-dose radiation or chemotherapy for cancer treatment can damage stem cells of the bone marrow, resulting in megaloblastic anemia.

False Signup and view all the answers

Secondary polycythemia is usually caused by increased erythropoietin (EPO) production in response to chronic hypoxia or from an erythropoietin-secreting tumor.

True Signup and view all the answers

Pregnancy is among the conditions associated with an increase in Hematocrit (PCV) value.

False Signup and view all the answers

Hematocrit value increases in conditions associated with hypoxia.

True Signup and view all the answers

Packed Cell Volume Count (Hematocrit) in Human Physiology

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Questions and Answers

What is the Packed Cell Volume (P.C.V) a measure of?

What is the average number of red blood cells per cubic millimeter in healthy men?

Where are red blood cells derived from?

What is the life span of a red blood cell?

What causes the production of greatly increased numbers of erythrocytes?

What is the procedure for measuring Packed Cell Volume (P.C.V)?

Which condition is characterized by an increase in the volume of P.C.V above the reference range?

What is the term for a decrease in the volume of P.C.V below the normal range?

What type of anemia results from vitamin B12 and folic acid deficiency?

Which type of anemia is characterized by hereditary disorders that make the cells fragile, causing them to rupture easily?

What is the condition that results in an increased level of circulating red blood cells in the bloodstream?

What causes primary polycythemias?

What is the term for a deficiency of hemoglobin in the blood caused by too few red blood cells or too little hemoglobin in the cells?

Which condition is characterized by an increase in hematocrit, hemoglobin, or RBC?

What is the term for chronic blood loss resulting in RBCs being smaller than normal and having too little hemoglobin inside them?

What is the average volume of red blood cells per cubic millimeter in healthy women?

What is the term for the process that causes the growth induction and production of greatly increased numbers of erythrocytes?

What is the term for the condition characterized by an increase in hematocrit, hemoglobin, or RBC?

What is the term for the chronic blood loss resulting in RBCs being smaller than normal and having too little hemoglobin inside them?

Where are red blood cells derived from?

What is the condition that results in an increased level of circulating red blood cells in the bloodstream?

What is the normal range of P.C.V for adult male?

What is the normal range of P.C.V for adult female?

What is the term for an increase in the volume of P.C.V above the reference range?

What is the term for a decrease in the volume of P.C.V below the normal range?

What are the conditions associated with an increase in Hematocrit (PCV) value?

Name the conditions associated with a decrease in Hematocrit (PCV) value.

What is the term for a deficiency of hemoglobin in the blood caused by either too few red blood cells or too little hemoglobin in the cells?

What is the condition that results in an increased level of circulating red blood cells in the bloodstream?

What is the term for lack of functioning bone marrow?

What type of anemia results from vitamin B12 & folic acid deficiency?

The Packed Cell Volume (P.C.V) measures the volume of both plasma and blood cells in the blood.

The average number of RBCs per cubic millimeter is higher in women than in men.

Erythrocytes have a fixed shape and do not change as they move through capillaries.

RBCs production is induced by exposure of the blood to high oxygen levels for a short time.

The life span of a red blood cell is approximately 90 days.

The volume of the P.C.V does not reflect the volume of the red blood cells.

An increase in the volume of P.C.V above the reference range is termed as anemia.

Megaloblastic anemia results from vitamin B12 and folic acid deficiency.

Hemolytic anemia is characterized by hereditary disorders that make the cells fragile, causing them to rupture easily as they go through the capillaries.

Bone marrow aplasia means a lack of functioning bone marrow.

Polycythemia results in a decreased level of circulating red blood cells in the bloodstream.

Anemia means a deficiency of hemoglobin in the blood caused by too few red blood cells or too little hemoglobin in the cells.

A person exposed to high-dose radiation or chemotherapy for cancer treatment can damage stem cells of the bone marrow, resulting in megaloblastic anemia.

Secondary polycythemia is usually caused by increased erythropoietin (EPO) production in response to chronic hypoxia or from an erythropoietin-secreting tumor.

Pregnancy is among the conditions associated with an increase in Hematocrit (PCV) value.

Hematocrit value increases in conditions associated with hypoxia.

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