True or False: Autoimmunity and immunodeficiency are two different terms for the same set of general disorders.
False.
Which blood type is considered the universal recipient?
Type AB, because they lack both anti-A and anti-B antibodies in their plasma.
1/161
p.13
Conditions Affecting Red Blood Cells

True or False: Autoimmunity and immunodeficiency are two different terms for the same set of general disorders.

False.

p.13
Blood Types and Transfusion Compatibility

Which blood type is considered the universal recipient?

Type AB, because they lack both anti-A and anti-B antibodies in their plasma.

p.13
Hemoglobin and Iron Metabolism

True or False: When metabolism increases, the O2 affinity of hemoglobin will decrease.

True.

p.6
Hemoglobin and Iron Metabolism

What is the state of the central iron atom when binding oxygen in hemoglobin?

Ferrous state.

p.1
Hematopoiesis

What are hematopoietic stem cells (HSCs)?

Bone marrow cells capable of producing all types of blood cells.

p.5
Anemia and Polycythemia

What happens if there is a deficiency of Vitamin B12 or folic acid?

It causes abnormal DNA formation and failure of nuclear maturation, leading to macrocytic anemia.

p.10
Anemia and Polycythemia

What symptoms are commonly associated with anemia?

Fatigue, dizziness, shortness of breath, and signs of pallor.

p.10
Anemia and Polycythemia

What is polycythemia?

An abnormally high level of circulating red blood cells.

p.10
Anemia and Polycythemia

What is polycythemia vera?

A pathologic condition characterized by excessive RBC production due to genetic aberrations.

p.1
Conditions Affecting Red Blood Cells

What is anemia?

A condition characterized by a deficiency of red blood cells or hemoglobin.

p.7
Hemoglobin and Iron Metabolism

What factors affect the affinity of hemoglobin for oxygen?

pH, temperature, and concentration of 2,3 DPG.

p.2
Developmental Hematopoiesis

Where do adults primarily produce blood cells?

In the bone marrow.

p.4
Red Blood Cell Structure and Function

What is the major function of RBCs?

Transport hemoglobin to carry oxygen.

p.7
Hemoglobin and Iron Metabolism

What is the recommended iron intake for women aged 19-49 years in the Philippines?

28 mg/day, plus an additional 10 mg/day if pregnant.

p.11
Conditions Affecting Red Blood Cells

What causes high hematocrit?

A genetic aberration in the hemocytoblastic cells that leads to excess production of RBCs.

p.3
Composition of Blood

What is the role of albumin in plasma?

It maintains plasma oncotic pressure and binds various substances.

p.11
Blood Types and Transfusion Compatibility

What are agglutinogens?

Antigens in the RBC membrane that determine blood types.

p.1
Hematopoiesis

What is the role of pluripotent HSCs?

They can form any type of blood cells under the influence of various cytokines.

p.12
Conditions Affecting Red Blood Cells

What occurs in the second pregnancy of an Rh(-) mother with an Rh(+) baby?

The mother may have developed antibodies against the D antigen, leading to hemolysis of the fetal blood.

p.8
RBC Destruction and Hemolysis

How are aging RBCs removed from circulation?

By macrophages, primarily in the spleen.

p.1
Red Blood Cell Structure and Function

What is the function of red blood cells (RBCs)?

To transport oxygen throughout the body.

p.1
Hemoglobin and Iron Metabolism

What is the significance of hemoglobin in red blood cells?

It is responsible for carrying oxygen from the lungs to the rest of the body.

p.1
Conditions Affecting Red Blood Cells

What is polycythemia?

A condition characterized by an increase in the number of red blood cells.

p.4
Hematopoiesis

What is the first stage of erythropoiesis?

Proerythroblast, formed from colony-forming-unit-erythroid (CFU-E) stem cells.

p.2
Composition of Blood

What is the main role of WBCs?

Destroying infective organisms and removing damaged tissues.

p.9
Conditions Affecting Red Blood Cells

What can cause aplastic anemia?

Damage to the bone marrow from prolonged radiation and chemicals.

p.12
Blood Types and Transfusion Compatibility

What is the universal recipient blood type?

Type AB is the universal recipient.

p.3
Red Blood Cell Structure and Function

What is the average concentration of RBCs in healthy men?

5.2 million cells per microliter.

p.3
Red Blood Cell Structure and Function

How do RBCs generate ATP?

Exclusively through glycolysis, since they lack mitochondria.

p.12
Conditions Affecting Red Blood Cells

What is erythroblastic fetalis?

A hemolytic disease of the newborn due to Rh incompatibility.

p.1
Formation of Blood Cells

Where does the formation of different blood cells occur?

In the Bone Marrow.

p.8
RBC Destruction and Hemolysis

What happens to hemoglobin in aging RBCs?

It is phagocytized and broken down by macrophages into heme and globin.

p.8
RBC Destruction and Hemolysis

What role does the spleen play in RBC removal?

It serves as an important blood filter that removes aged or abnormal RBCs.

p.2
Developmental Hematopoiesis

What are Differentiation Inducers responsible for?

They promote differentiation of committed stem cells towards final adult blood cells.

p.8
Red Blood Cell Structure and Function

What is the normal range for red blood cell count in females?

4.0-5.4 x 10^6 /μL.

p.4
Hematopoiesis

When does hemoglobin synthesis begin in erythropoiesis?

At the basophilic erythroblast stage.

p.2
Composition of Blood

What are the three main cell types in the formed elements of blood?

RBCs (Erythrocytes), WBCs (Leukocytes), and Platelets (Thrombocytes).

p.9
Conditions Affecting Red Blood Cells

What is Mean Cell Hemoglobin Concentration (MCHC)?

The average concentration of hemoglobin in red blood cells.

p.13
Hemoglobin and Iron Metabolism

What causes a shift to the right of Hgb-O2 affinity?

An increase in body temperature and 2,3-DPG concentration, and a decrease in blood pH.

p.5
Hematopoiesis

What is the most important regulator of red blood cell production?

Tissue oxygenation.

p.11
Conditions Affecting Red Blood Cells

What is the RBC count in physiological anemia due to altitude?

6 to 7 million/mm3, which is 30% above normal.

p.11
Blood Types and Transfusion Compatibility

Which blood type is the most common?

Type O.

p.3
Hematopoiesis

Where does erythropoiesis occur during the third trimester of gestation?

In the bone marrow.

p.6
Hemoglobin and Iron Metabolism

What is the quantity of hemoglobin typically found in cells?

34 g/100 ml of cells.

p.6
Hemoglobin and Iron Metabolism

What are the main types of hemoglobin present at birth?

Hemoglobin F (α2γ2) and Hemoglobin A (α2β2).

p.6
Hemoglobin and Iron Metabolism

What does the Oxygen-Hemoglobin dissociation curve illustrate?

The relationship between pO2 in the blood and the saturation of oxygen bound to hemoglobin.

p.4
Hematopoiesis

What type of stem cells are involved in the development of blood cells?

Multipotential or pluripotent hematopoietic stem cells.

p.7
Hemoglobin and Iron Metabolism

What is the total quantity of iron in the body?

Approximately 4 to 5 grams, with 65% found in hemoglobin.

p.9
Conditions Affecting Red Blood Cells

What does a MCV value of >100 fL indicate?

Macrocytosis (large red blood cells).

p.9
Conditions Affecting Red Blood Cells

How is MCHC calculated?

MCHC = MCH / RBC.

p.13
Conditions Affecting Red Blood Cells

True or False: CD4 T cells interact with MHC class I on CD8 T cells.

False; CD4 T cells interact with MHC class II.

p.11
Conditions Affecting Red Blood Cells

How does secondary polycythemia occur?

Due to hypoxia from high altitudes or failure of oxygen delivery to tissues, leading to increased EPO levels.

p.6
Hemoglobin and Iron Metabolism

What effect does cooperative binding have on hemoglobin?

It increases the affinity of the remaining heme groups for oxygen after one heme binds to oxygen.

p.11
Blood Types and Transfusion Compatibility

What determines the blood type in the ABO system?

The presence of certain agglutinogens on the RBC membrane.

p.5
Hemoglobin and Iron Metabolism

Describe the structure of hemoglobin.

Hemoglobin is a tetrameric protein composed of 4 subunits: 2 alpha chains and 2 beta chains, each containing a heme group.

p.6
Hemoglobin and Iron Metabolism

How much oxygen can each gram of hemoglobin combine with if fully saturated?

1.34 ml of oxygen.

p.6
Hemoglobin and Iron Metabolism

What percentage of hemoglobin is Hemoglobin A in adults?

95-98%.

p.6
Hemoglobin and Iron Metabolism

What is the significance of the flat portion of the Oxygen-Hemoglobin dissociation curve?

It indicates that hemoglobin is highly saturated with oxygen despite changes in pO2.

p.4
Developmental Hematopoiesis

How does bone marrow cellularity change in the elderly?

It is less cellular but can still produce an appropriate amount of RBCs if healthy.

p.8
Red Blood Cell Structure and Function

What is the normal range for reticulocyte percentage?

0.5-1.5%.

p.7
Hemoglobin and Iron Metabolism

What are the two forms of dietary iron?

Heme iron (from animal sources, more readily absorbed) and non-heme iron (from plant sources).

p.9
Conditions Affecting Red Blood Cells

How is MCH calculated?

MCH = Hgb / RBC.

p.9
Conditions Affecting Red Blood Cells

What deficiencies can lead to specific types of anemia?

Iron deficiency can lead to iron deficiency anemia, and deficiencies in vitamin B12 and folic acid can lead to megaloblastic anemia.

p.3
Composition of Blood

What is the normal sodium concentration in plasma?

140 mM.

p.5
Hematopoiesis

What stimulates the release of erythropoietin?

Hypoxia or low oxygen states.

p.1
Hematopoiesis

What is hematopoiesis?

The formation of blood cells that begins during embryonic development and continues throughout adulthood.

p.3
Red Blood Cell Structure and Function

What is the significance of 2,3-diphosphoglycerate (2,3-DPG) in RBCs?

It reduces the affinity of hemoglobin for oxygen, facilitating oxygen release into tissues.

p.6
Hemoglobin and Iron Metabolism

What characterizes the Tensed State (T state) of hemoglobin?

Lower affinity for oxygen; heme groups are less accessible for binding.

p.11
Blood Types and Transfusion Compatibility

What does a green indication mean in blood transfusion compatibility?

It is safe to transfuse.

p.10
Anemia and Polycythemia

What triggers increased levels of EPO leading to polycythemia?

Hypoxia, which can result from conditions like lung disease or living at high altitude.

p.10
Anemia and Polycythemia

What are the typical RBC count and hematocrit levels in polycythemia vera?

RBC count may be 7 to 8 million/mm³ and hematocrit may be 60% to 70%.

p.7
Hemoglobin and Iron Metabolism

What is p50 in relation to hemoglobin?

It is the partial pressure of O2 at which 50% of hemoglobin is saturated with oxygen, roughly about 26 mmHg in normal adults.

p.9
Conditions Affecting Red Blood Cells

What is the Red Cell Count (RBC)?

The number of red blood cells per liter of blood.

p.7
Hemoglobin and Iron Metabolism

What is hemosiderin?

An extremely insoluble form of iron storage that appears when the total quantity of iron exceeds the apoferritin storage pool.

p.9
Conditions Affecting Red Blood Cells

What role does erythropoietin (EPO) play in red blood cell production?

EPO stimulates the bone marrow to produce red blood cells.

p.12
Blood Types and Transfusion Compatibility

Which blood types can Type B donate to?

Type B can donate to Type B and AB.

p.12
Blood Types and Transfusion Compatibility

What happens during an agglutination reaction?

Clumps of cells are formed, indicating a risk of transfusion reactions.

p.5
Hematopoiesis

Where is the majority of erythropoietin produced?

90% from the kidneys, 10% from the liver.

p.12
Blood Types and Transfusion Compatibility

Why is there an Rh registry for blood banks?

Because Rh negative blood is difficult to acquire.

p.8
Anemia and Polycythemia

How does hepcidin relate to inflammation?

Inflammation causes overproduction of hepcidin, reducing iron absorption and release, leading to anemia of chronic disease.

p.3
Red Blood Cell Structure and Function

What is the primary role of carbonic anhydrase in RBCs?

To catalyze the reversible reaction between CO2 and water to form carbonic acid.

p.2
Developmental Hematopoiesis

What are the two types of hematopoietic stem cells?

Pluripotent HSC and Multipotent HSC.

p.2
Developmental Hematopoiesis

What is IL-3 and its function?

Interleukin-3 promotes growth and reproduction of all different types of committed stem cells.

p.2
Developmental Hematopoiesis

What triggers the production of erythrocytes in response to hypoxia?

Exposure of blood to low oxygen levels.

p.2
Developmental Hematopoiesis

What does a CBC indicate in patients with infections?

The predominant type of WBC can indicate the kind of organism present.

p.2
Composition of Blood

What is the average blood volume in an adult?

5 liters.

p.4
Regulation of Erythropoiesis

What is the most essential regulator of RBC production?

Tissue oxygenation.

p.9
Conditions Affecting Red Blood Cells

What is the definition of anemia?

Deficiency of hemoglobin in the blood, caused by too few RBCs or too little hemoglobin within the cells.

p.11
Conditions Affecting Red Blood Cells

What happens to the total blood volume in high hematocrit conditions?

It increases, causing intense engorgement of the total vascular blood system.

p.5
Hematopoiesis

What conditions can decrease oxygenation?

Low blood volume, anemia, low hemoglobin, poor blood flow, pulmonary conditions.

p.5
Hematopoiesis

What role does Hypoxia Inducible Factor (HIF-1) play in erythropoietin production?

It serves as a transcription factor for hypoxia-inducible genes, inducing erythropoietin synthesis.

p.6
Hemoglobin and Iron Metabolism

What characterizes the Relaxed State (R state) of hemoglobin?

High affinity for oxygen; heme groups facilitate binding of oxygen.

p.8
RBC Destruction and Hemolysis

What is the lifespan of red blood cells (RBCs)?

100-120 days.

p.1
Composition of Blood

What are the components of blood?

Cellular elements and plasma components.

p.1
Developmental Hematopoiesis

What factors are essential for erythropoiesis?

Growth and differentiation in the process of blood cell formation.

p.8
Red Blood Cell Structure and Function

What is the normal range of hemoglobin concentration for females?

12-16 g/dL.

p.1
Blood Types and Transfusion Compatibility

What are the major blood group systems?

The O-A-B system and the Rh system.

p.9
Conditions Affecting Red Blood Cells

What is the Mean Cell Volume (MCV)?

The average volume of a single red blood cell expressed in femtoliter.

p.7
Hemoglobin and Iron Metabolism

How is iron absorbed in the body?

Primarily in the duodenum, where it combines with apotransferrin to form transferrin for transport in plasma.

p.2
Composition of Blood

Why is the protein concentration higher in plasma than in interstitial fluid?

Capillaries are generally impermeable to large plasma proteins, creating a colloid osmotic pressure gradient.

p.13
Composition of Blood

True or False: RBCs are the most numerous of the formed elements of blood.

True.

p.11
Conditions Affecting Red Blood Cells

What problems arise due to the high number of cells in high hematocrit?

Many blood capillaries become plugged or obstructed by the viscous blood.

p.12
Blood Types and Transfusion Compatibility

What are the common types of Rh antigens?

C, D, E, c, d, e.

p.6
Hemoglobin and Iron Metabolism

What are the two main conformational states of hemoglobin?

Relaxed State (R state) and Tensed State (T state).

p.11
Blood Types and Transfusion Compatibility

What antibodies are present in blood type O?

Anti-A and anti-B antibodies are present in the plasma.

p.5
Hemoglobin and Iron Metabolism

What is the role of iron in hemoglobin?

Iron is the center of the heme group and is the site where oxygen binds.

p.4
Developmental Hematopoiesis

What happens to bone marrow cellularity as we age?

Cellularity steadily drops as we age.

p.4
Developmental Hematopoiesis

At what age does RBC synthesis in long bones essentially decline?

Around 18-25 years old.

p.4
Developmental Hematopoiesis

What happens to the marrow of long bones beyond age 20?

It becomes fatty and produces no more RBCs.

p.8
Red Blood Cell Structure and Function

What does the mean corpuscular volume (MCV) measure?

The average volume of red blood cells.

p.9
Conditions Affecting Red Blood Cells

How is MCV calculated?

MCV = Hematocrit / RBC.

p.7
Hemoglobin and Iron Metabolism

What is the role of ferritin in the body?

Ferritin is the storage form of iron, combining with apoferritin to store excess iron.

p.9
Conditions Affecting Red Blood Cells

What is anisocytosis?

A change in the size of red blood cells.

p.13
Anemia and Polycythemia

Which deficiency causes Megaloblastic Anemia?

Both Vitamin B12 and Folic Acid deficiencies can cause Megaloblastic Anemia.

p.3
Composition of Blood

What are the major types of plasma proteins?

Albumin, globulins, coagulation proteins, and immunoglobulins.

p.10
Anemia and Polycythemia

What happens to hematocrit levels after plasma volume is restored following hemorrhage?

The reduced red cell mass is revealed by a low hematocrit.

p.10
Anemia and Polycythemia

What characterizes hemolytic anemia?

Increased red cell breakdown due to various conditions.

p.1
Hematopoiesis

What types of progenitor cells can pluripotent HSCs differentiate into?

Lymphoid progenitor cells and multipotential progenitor cells.

p.12
Conditions Affecting Red Blood Cells

What happens to hemoglobin released during hemolysis?

It is converted to bilirubin, which can cause severe anemia and jaundice.

p.5
Hemoglobin and Iron Metabolism

What is the primary function of hemoglobin?

To transport oxygen from the lungs to tissues and facilitate the transport of carbon dioxide from tissues to the lungs.

p.7
Hemoglobin and Iron Metabolism

What is the significance of a pO2 level beyond 60 mmHg for hemoglobin?

It results in a large amount of O2 released from hemoglobin with only a small change in pO2, facilitating oxygen release in tissues.

p.7
Hemoglobin and Iron Metabolism

What does the steep portion of the oxygen dissociation curve represent?

It represents the range of pO2 levels typically found in tissues, where small changes in pO2 result in significant changes in O2 saturation.

p.9
Conditions Affecting Red Blood Cells

What does hematocrit (Hct) measure?

The ratio of the volume of red cells to the volume of whole blood.

p.4
Hematopoiesis

What characterizes the polychromatic erythroblast stage?

Hemoglobin first appears, and the nucleus condenses.

p.2
Composition of Blood

What is the primary function of RBCs?

Transport of gases, primarily oxygen.

p.9
Conditions Affecting Red Blood Cells

What does hypochromic mean?

Pallor due to abnormal MCH and MCHC.

p.3
Red Blood Cell Structure and Function

What is the main function of red blood cells (RBCs)?

Oxygen transport from the lungs to tissues.

p.12
Blood Types and Transfusion Compatibility

What can transfusion reactions lead to?

Obstruction of blood vessels and hemolysis of transfused blood, which can result in kidney failure.

p.12
Blood Types and Transfusion Compatibility

What does the presence of D antigen indicate?

It indicates that the blood type is Rh positive.

p.10
Anemia and Polycythemia

What is hereditary spherocytosis?

A condition causing increased red cell fragility due to a defective cytoskeleton.

p.11
Blood Types and Transfusion Compatibility

What is component therapy in blood transfusion?

The use of blood components such as platelets, packed cells, or plasma.

p.5
Hemoglobin and Iron Metabolism

What is the most prevalent type of hemoglobin in adults?

Hemoglobin A, composed of 2 alpha and 2 beta chains.

p.2
Developmental Hematopoiesis

What is a Committed stem cell?

A non-committed, intermediate stage cell that produces colonies of specific types of blood cells.

p.4
Developmental Hematopoiesis

In adulthood, where is RBC synthesis mainly concentrated?

In the vertebrae, sternum, and ribs.

p.2
Developmental Hematopoiesis

What is the role of WBCs in response to infections?

They grow, differentiate, and form specific types needed to combat infections.

p.7
Hemoglobin and Iron Metabolism

What does a shift to the left in the oxygen dissociation curve mean?

A decrease in temperature or an increase in pH, requiring a lower pO2 to bind a given amount of O2.

p.9
Conditions Affecting Red Blood Cells

What does a MCV value of <80 fL indicate?

Microcytosis (small red blood cells).

p.7
Hemoglobin and Iron Metabolism

How much iron does an average man excrete daily?

About 0.6 mg of iron daily, mainly through defecation.

p.12
Blood Types and Transfusion Compatibility

What is unique about Type O blood in terms of donation?

Type O can be given to all blood types because it does not have any antigens.

p.10
Anemia and Polycythemia

What is a general cause of anemia related to blood loss?

Hemorrhage causes immediate loss of red cells due to blood loss.

p.10
Anemia and Polycythemia

What are some common causes of chronic blood loss?

Conditions like hookworm infections that cause slow, continuous bleeding.

p.8
Hemoglobin and Iron Metabolism

What is the primary function of hepcidin?

Regulates iron homeostasis by inhibiting ferroportin of iron-exporting cells.

p.3
Composition of Blood

What is the pH range of normal arterial blood?

7.35 to 7.45.

p.10
Anemia and Polycythemia

What does a high reticulocyte count indicate?

An increased rate of erythropoiesis, reflecting compensation for red cell loss.

p.4
Developmental Hematopoiesis

Where does most of the RBC synthesis occur during infancy?

In the long bones, such as the tibia and femur.

p.7
Hemoglobin and Iron Metabolism

What happens to hemoglobin at high pO2 levels?

Hemoglobin is almost fully saturated with oxygen, and small changes in pO2 result in minimal changes in O2 binding.

p.9
Conditions Affecting Red Blood Cells

What is hemoglobin concentration (Hb)?

The amount of hemoglobin in the volume of blood.

p.2
Developmental Hematopoiesis

Where is blood produced during fetal development?

In the yolk sac, liver, and spleen.

p.4
Hematopoiesis

What is a reticulocyte?

A cell that contains small amounts of basophilic materials and remnants of organelles and matures into erythrocytes in 1-2 days.

p.2
Composition of Blood

What is the composition of plasma?

92% water, 7% proteins, and 1% solutes (CHO, AA, ions).

p.13
Red Blood Cell Structure and Function

True or False: Reticulocytes have a nucleus.

False; reticulocytes have already lost their nucleus.

p.3
Red Blood Cell Structure and Function

What structural feature of RBCs allows them to pass through small capillaries?

Their biconcave shape and flexibility.

p.5
RBC Destruction and Hemolysis

What vitamins are required for the final maturation of RBCs?

Vitamin B9 (folic acid) and Vitamin B12.

p.10
Anemia and Polycythemia

What is the most common cause of anemia with normal or reduced reticulocyte count?

Defect in red cell production or maturation, often due to nutritional deficiencies.

p.1
Formation of Blood Cells

What do committed progenitor cells develop into?

Specific blood cells such as erythrocytes, thrombocytes/platelets, and leukocytes.

p.8
RBC Destruction and Hemolysis

What is the fate of porphyrin from hemoglobin degeneration?

It is converted into bilirubin, released into the blood, and removed by the liver into bile.

p.8
RBC Destruction and Hemolysis

What happens to RBCs without the spleen?

Immune cells can detect damaged cells, but removal is less efficient, leading to an increase in old abnormal RBCs in circulation.

p.8
Red Blood Cell Structure and Function

What is the normal range for hematocrit in males?

40-52%.

p.7
Hemoglobin and Iron Metabolism

What does a shift to the right in the oxygen dissociation curve indicate?

An increase in temperature or a decrease in pH, requiring a higher pO2 for hemoglobin to bind a specific amount of O2.

p.9
Conditions Affecting Red Blood Cells

What is Mean Cell Hemoglobin (MCH)?

The average amount of hemoglobin in the average red blood cell expressed in picogram.

p.9
Conditions Affecting Red Blood Cells

What are the three requirements for normal red blood cell production?

Functional bone marrow, adequate erythropoietin (EPO), and adequate nutrient supply.

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Study Smarter, Not Harder