Leukocytes: The White Blood Cells
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Questions and Answers

What is the primary function of platelets in the blood?

  • Removing waste from body cells
  • Stopping bleeding through coagulation (correct)
  • Protecting the body from external and internal threats
  • Delivering oxygen and nutrients to body cells

    • What is the role of White Blood Cells (WBC) in the blood?

  • Removing waste from body cells
  • Protecting the body from external and internal threats (correct)
  • Delivering oxygen and nutrients to body cells
  • Stopping bleeding through coagulation

    • What is the hematocrit a measure of?

  • Percentage of Red Blood Cells in blood (correct)
  • Percentage of plasma in blood
  • Percentage of White Blood Cells in blood
  • Percentage of platelets in blood

    • What causes blood to be a brighter red color?

    <p>The reaction of hemoglobin with oxygen</p> Signup and view all the answers

    What is the main function of erythrocytes?

    <p>Transport of oxygen and carbon dioxide</p> Signup and view all the answers

    What is the main role of albumin?

    <p>Transport of fatty acids and steroid hormones</p> Signup and view all the answers

    What are the three types of globulins?

    <p>Alpha, beta, gamma</p> Signup and view all the answers

    Where does hemopoiesis occur?

    <p>Red marrow in bones</p> Signup and view all the answers

    What is the function of erythropoietin?

    <p>Stimulate erythrocyte production</p> Signup and view all the answers

    What is the main function of thrombopoietin?

    <p>Develop megakaryocytes into platelets</p> Signup and view all the answers

    Where do B cells mature?

    <p>Bone marrow</p> Signup and view all the answers

    What is the purpose of the drug RhoGAM?

    <p>To prevent Rh negative people from developing Rh antibodies</p> Signup and view all the answers

    What is the most common form of anemia?

    <p>Iron deficient anemia</p> Signup and view all the answers

    What is the role of antibodies in the ABO blood group system?

    <p>To determine whether an individual has A, B, both A and B antigens, or no antigen on their erythrocytes</p> Signup and view all the answers

    What causes polycythemia?

    <p>Dehydration and resulting drop in plasma levels</p> Signup and view all the answers

    Why is blood type O negative called the universal donor in emergencies?

    <p>Because it has no preformed antibodies in the body</p> Signup and view all the answers

    What is the role of a reticulocyte?

    <p>An immature form of erythrocyte</p> Signup and view all the answers

    In which blood group system is the Rh D antigen relevant?

    <p>Rh blood group system</p> Signup and view all the answers

    What can lead to insufficient absorption of vitamin B12 or folate?

    <p>Celiac disease</p> Signup and view all the answers

    Which organ can generate formed elements through extramedullary hemopoiesis?

    <p>Spleen</p> Signup and view all the answers

    What is the main function of leukocytes?

    <p>Protecting the body</p> Signup and view all the answers

    Which type of leukocyte intensifies inflammation like mast cells?

    <p>Basophil</p> Signup and view all the answers

    What is the role of B cells in the immune system?

    <p>Producing antibodies</p> Signup and view all the answers

    What can result from too many platelets in the blood?

    <p>Thrombosis</p> Signup and view all the answers

    What is the function of von Willebrand factor in the blood clotting process?

    <p>Securing the clot plug</p> Signup and view all the answers

    Which of the following is true about thrombocytopenia?

    <p>It leads to uncontrolled bleeding</p> Signup and view all the answers

    What is the function of thrombus in the blood vessels?

    <p>Resisting blood flow</p> Signup and view all the answers

    Which pathway of coagulation is quicker and caused by trauma?

    <p>Extrinsic pathway</p> Signup and view all the answers

    Study Notes

    Blood Composition and Function

    • Platelets' primary function is to form blood clots and stop bleeding.
    • White Blood Cells (WBCs) function to protect the body against infection and disease.

    Blood Cells

    • Erythrocytes (red blood cells) main function is to carry oxygen from the lungs to the body's tissues.
    • Hematocrit measures the percentage of red blood cells in the blood.

    Blood Proteins

    • Albumin's main function is to regulate blood pressure and transport substances in the blood.
    • Globulins are divided into three types: alpha, beta, and gamma globulins.

    Blood Cell Production

    • Hemopoiesis occurs in the bone marrow, where blood cells are produced.
    • Erythropoietin stimulates the production of red blood cells.
    • Thrombopoietin stimulates the production of platelets.

    Immune System

    • B cells mature in the bone marrow and play a crucial role in the immune system.
    • RhoGAM is a drug that prevents an immune response in Rh-negative mothers.

    Anemia and Blood Disorders

    • The most common form of anemia is iron deficiency anemia.
    • Polycythemia is caused by an overproduction of red blood cells.

    Blood Types and Compatibility

    • In the ABO blood group system, antibodies play a crucial role in determining blood type.
    • Blood type O negative is called the universal donor in emergencies because it can be transfused to anyone regardless of their blood type.

    Reticulocytes and Leukocytes

    • Reticulocytes are immature red blood cells that mature into erythrocytes.
    • Leukocytes, also known as white blood cells, function to protect the body against infection and disease.
    • Eosinophils intensify inflammation like mast cells.

    Coagulation and Clotting

    • Von Willebrand factor plays a crucial role in the blood clotting process.
    • Thrombocytopenia is a condition characterized by low platelet levels.
    • A thrombus is a blood clot that forms in a blood vessel.
    • The extrinsic pathway of coagulation is quicker and caused by trauma.

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    Test your knowledge on leukocytes, the white blood cells that protect the body. Learn about their size, structure, types, functions, and behaviors within the body.

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