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Differential Leukocyte Count: Medical Physiology Quiz
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Differential Leukocyte Count: Medical Physiology Quiz

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Questions and Answers

Which type of white blood cell has the ability to 'seek out and destroy' foreign invaders?

  • Eosinophils
  • Basophils
  • Lymphocytes
  • Neutrophils (correct)
  • How many WBCs does an adult human have per microliter of blood?

  • 15000-20000
  • 5000-7000
  • 7000-10000 (correct)
  • 10000-15000
  • What is the life span of granulocytes in the blood?

  • 4-8 hours (correct)
  • 8-12 hours
  • 12-16 hours
  • 2-4 hours
  • How long do monocytes typically survive in the blood?

    <p>10-20 hours</p> Signup and view all the answers

    Which type of white blood cell swells to much larger sizes to become tissue macrophages?

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

    What is the average life span of lymphocytes?

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

    Which type of white blood cell are specifically transported to areas of serious infection and inflammation?

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

    Which type of white blood cell are known as granulocytes?

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

    Which type of white blood cells provide a rapid and potent defense against infectious agents?

    <p>Neutrophils and basophils</p> Signup and view all the answers

    What is the main aim of the experiment described in the text?

    <p>To measure the percentage of different types of leukocytes in the peripheral blood</p> Signup and view all the answers

    How are blood smears prepared for the experiment?

    <p>By shaking the film in the air after spreading the blood on a horizontal slide</p> Signup and view all the answers

    What is the function of cedar oil in the experiment?

    <p>To enhance the visibility of leukocytes under the microscope</p> Signup and view all the answers

    Which leukocyte type has a nucleus connected by thin strands of nuclear material?

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

    What is characteristic of eosinophils?

    <p>Their count increases in parasitic infestation and allergic conditions</p> Signup and view all the answers

    Which leukocyte type has a nucleus that looks like a telephone receiver?

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

    What is contained in basophil granules?

    <p>Histamine and heparin</p> Signup and view all the answers

    Which leukocyte type accounts for 20–40% of all leukocytes?

    <p>Large, clear cytoplasm and dark purple nucleus</p> Signup and view all the answers

    Neutrophils account for 55–75% of all leukocytes.

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

    Eosinophils increase in parasitic infestation and allergic conditions such as bronchial asthma and hay fever.

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

    Basophils account for 0–1% of all leukocytes.

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

    Lymphocytes produce antibodies.

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

    Monocytes become macrophages that defend the body against viruses and bacteria.

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

    Chemotaxis refers to the ability of leukocytes to engulf and destroy foreign invaders.

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

    Phagocytosis is the process by which leukocytes engulf and destroy foreign invaders.

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

    Diapedesis is the passage of leukocytes through intact capillary walls into the surrounding tissue.

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

    Leukopenia refers to a high count of leukocytes in the blood.

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

    Thrombocytes are also known as white blood cells.

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

    Neutrophils are known as granulocytes.

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

    Lymphocyte count rises in people with typhoid fever, malaria, infectious mononucleosis, and endocarditis.

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

    Neutrophils have a life span of weeks or months.

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

    Lymphocytes have a short transit time of 10-20 hours in the blood.

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

    Monocytes can live for months unless destroyed during phagocytic functions.

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

    Eosinophils are not known for their phagocytic functions.

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

    Basophils provide a rapid and potent defense against infectious agents.

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

    Granulocytes have life spans of weeks or months in the blood.

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

    White blood cells are also known as erythrocytes.

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

    The adult human being has about 2,000-3,000 WBCs per microliter of blood.

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

    Lymphocytes have a life span of only 4-5 days in tissues.

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

    Granulocytes and monocytes have the special ability to seek out and destroy foreign invaders.

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

    Agranulocytes include neutrophils and eosinophils.

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

    The granulocytes and monocytes have a short transit time of 10-20 hours in the blood.

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

    What is the life span of granulocytes after being released from the bone marrow?

    <p>4-8 hours circulating in the blood and another 4-5 days in tissues</p> Signup and view all the answers

    How long can monocytes typically survive in the blood?

    <p>10-20 hours</p> Signup and view all the answers

    What is the concentration of white blood cells in the adult human being per microliter of blood?

    <p>7000-10,000</p> Signup and view all the answers

    What is the function of lymphocytes?

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

    What is characteristic of eosinophils?

    <p>Increase in parasitic infestation and allergic conditions</p> Signup and view all the answers

    What is the main aim of the experiment described in the text?

    <p>Leukocyte count</p> Signup and view all the answers

    What is the life span of lymphocytes?

    <p>Weeks or months</p> Signup and view all the answers

    What is the life span of monocytes in tissues?

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

    What type of white blood cells specifically transported to areas of serious infection and inflammation?

    <p>Granulocytes and monocytes</p> Signup and view all the answers

    What is the function of cedar oil in the experiment?

    <p>Preparation of blood smears</p> Signup and view all the answers

    What is the characteristic of the nucleus of monocytes?

    <p>Connected by thin strands of nuclear material</p> Signup and view all the answers

    What is contained in basophil granules?

    <p>Histamine and heparin</p> Signup and view all the answers

    What is the procedure for making a blood smear?

    <p>Put a drop of blood on one end of the first slide and spread it using a second slide. Then allow the film to dry and stain it with leishman’s stain.</p> Signup and view all the answers

    What is the aim of determining the percentage of different types of leucocytes in the peripheral blood?

    <p>To diagnose certain diseases where certain types of leucocytes may increase or decrease.</p> Signup and view all the answers

    What is the function of cedar oil in the experiment?

    <p>To recognize the cells using objective lens power.</p> Signup and view all the answers

    What is characteristic of neutrophils?

    <p>Multilobed nucleus connected by thin strands of nuclear material and tiny, light staining granules.</p> Signup and view all the answers

    What is the characteristic of eosinophils?

    <p>Bilobed nucleus which looks like a telephone receiver and large, pinkish to red granules.</p> Signup and view all the answers

    What is the characteristic of basophils?

    <p>Nucleus is bilobed, masked by numerous, deeply stained blue to purple granules.</p> Signup and view all the answers

    What is characteristic of lymphocytes?

    <p>Very large nucleus for the size of the cell, stains dark purple, and small, clear cytoplasm.</p> Signup and view all the answers

    What is characteristic of monocytes?

    <p>Largest of the leucocytes, kidney-shaped nucleus, and abundant, light blue cytoplasm.</p> Signup and view all the answers

    What is the term for a low count of lymphocytes?

    <p>Lymphocytopenia.</p> Signup and view all the answers

    What is the term for a high count of neutrophils?

    <p>Neutrophilia.</p> Signup and view all the answers

    What is the term for a high count of monocytes?

    <p>Monocytosis.</p> Signup and view all the answers

    What is the term for the process by which leukocytes engulf and destroy foreign invaders?

    <p>Phagocytosis.</p> Signup and view all the answers

    Study Notes

    White Blood Cells

    • Granulocytes and monocytes have the ability to 'seek out and destroy' foreign invaders.
    • An adult human has about 4,500-11,000 WBCs per microliter of blood.

    Granulocytes

    • Include neutrophils, eosinophils, and basophils.
    • Neutrophils account for 55-75% of all leukocytes.
    • Eosinophils increase in parasitic infestation and allergic conditions such as bronchial asthma and hay fever.
    • Basophils account for 0-1% of all leukocytes.
    • Have a life span of weeks or months in the blood.

    Monocytes

    • Can live for months unless destroyed during phagocytic functions.
    • Become macrophages that defend the body against viruses and bacteria.
    • Are typically transported to areas of serious infection and inflammation.
    • Have a nucleus connected by thin strands of nuclear material.

    Lymphocytes

    • Produce antibodies.
    • Have a life span of 4-5 days in tissues.
    • Account for 20-40% of all leukocytes.
    • Count rises in people with typhoid fever, malaria, infectious mononucleosis, and endocarditis.

    Phagocytosis and Chemotaxis

    • Phagocytosis is the process by which leukocytes engulf and destroy foreign invaders.
    • Chemotaxis is the ability of leukocytes to move towards foreign invaders.

    Blood Smear Preparation and Experiment

    • Blood smears are prepared by spreading a thin layer of blood on a glass slide.
    • Cedar oil is used to fix the blood smear.
    • The main aim of the experiment is to determine the percentage of different types of leukocytes in the peripheral blood.

    Leukocyte Characteristics

    • Eosinophils are characterized by their bilobed nucleus and acidophilic granules.
    • Basophils are characterized by their small size and sparse, darkly staining granules.
    • Lymphocytes are characterized by their large nucleus and small amount of cytoplasm.
    • Monocytes are characterized by their kidney-shaped nucleus connected by thin strands of nuclear material.

    Leukopenia and Leukocytosis

    • Leukopenia refers to a low count of leukocytes in the blood.
    • Leukocytosis refers to a high count of leukocytes in the blood.

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    Related Documents

    Diff.Wbc count.pdf

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