Block 2 Pace Quiz Blood And Hematopoeisis

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  • 1/7 Questions

    Which of the following cell types is responsible for the production of immunoglobin?

    • Mast cell
    • Fibroblast
    • Macrophage
    • Mesenchymal cell
    • Plasma cell
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About This Quiz

This quiz, titled 'Block 2 pace quiz Blood and Hematopoiesis', assesses knowledge on blood cell functions, immunoglobulin production, and cytokine roles. It is designed for medical students preparing for exams, enhancing understanding of hematopoietic and immune system interactions.

Hematology Quizzes & Trivia

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  • 2. 

    Which is the only leukocyte that! after entering the connective tissue from the bloodstream! can re-enter the bloodstream?

    • Lymphocyte

    • Neutrophil

    • Monocyte

    • Basophil

    • Neutrophil

    Correct Answer
    A. Lymphocyte
    Explanation
    Lymphocytes are the only leukocytes that can re-enter the bloodstream after entering the connective tissue. This is because lymphocytes have the ability to migrate between the bloodstream and the lymphatic system, allowing them to circulate throughout the body and play a crucial role in immune responses. Neutrophils, monocytes, and basophils, on the other hand, do not have this ability and once they enter the connective tissue, they stay there to carry out their specific functions.

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  • 3. 

    Which of the following statements about erythrocytes is CORRECT?

    • Erythrocytes get most of their energy from oxidative phosphorylation

    • Erythrocytes survive approximately one month in the bloodstream

    • The abundance of erythrocytes in the blood of an adult male living at sea level is approximately 4xl06j/ul.

    • The ABO blood group antigens on erythrocytes are carbohydrate groups.

    • The most abundant protein in erythrocytes is myoglobin

    Correct Answer
    A. The ABO blood group antigens on erythrocytes are carbohydrate groups.
    Explanation
    The ABO blood group antigens on erythrocytes are carbohydrate groups. This statement is correct because the ABO blood group antigens are indeed carbohydrate groups that are attached to the surface of erythrocytes. These antigens determine an individual's blood type, which can be A, B, AB, or O. The presence or absence of specific carbohydrate groups on the erythrocyte surface determines the blood type.

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  • 4. 

    Which type of blood cell can live the longest in the human body?

    • Monocyte

    • Erythrocyte

    • Lymphocyte

    • Eosinophil

    • Neutrophil

    Correct Answer
    A. Lymphocyte
    Explanation
    LONG LIVE THE LYMPHOCYTES!!!

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  • 5. 

    Which of the following are abundant in bone marrow stroma?

    • Skeletal muscle cells

    • T lymphocytes

    • Macrophages

    • Smooth muscle cells

    • Platelets

    Correct Answer
    A. Macrophages
    Explanation
    Macrophages are abundant in bone marrow stroma. They are a type of white blood cell that play a crucial role in the immune system by engulfing and digesting cellular debris, foreign substances, and pathogens. In the bone marrow, macrophages are responsible for removing old or damaged cells, promoting tissue repair, and regulating the production of blood cells. Their presence in the bone marrow stroma helps maintain a healthy and functional bone marrow microenvironment.

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  • 6. 

    Which of the following cell types is involved in opsonization ?

    • Mast cell

    • Fibroblast

    • Macrophage

    • Mesenchymal cell

    • Plasma cell

    Correct Answer
    A. Macrophage
    Explanation
    Macrophages are involved in opsonization, which is the process of marking pathogens or foreign particles for destruction by immune cells. They do this by binding to the pathogens or particles and coating them with opsonins, such as antibodies or complement proteins. This coating makes it easier for other immune cells, such as neutrophils, to recognize and engulf the marked pathogens or particles, enhancing the efficiency of the immune response.

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  • 7. 

    Which of the following is the best definition of a cytokine?

    • Small secreted protein that attracts cells to move towards its source.

    • Substances that may activate or chemoattract leucocytes

    • Extracellular signal protein or peptide made by one cell that acts on another cell

    • Secreted protein or peptide made by one leucocyte that acts on another leucocyte

    • A type of intracellular signaling molecule

    Correct Answer
    A. Extracellular signal protein or peptide made by one cell that acts on another cell
    Explanation
    A cytokine is an extracellular signal protein or peptide made by one cell that acts on another cell. Cytokines play a crucial role in cell signaling and communication, regulating various immune responses, inflammation, and cell movement. They can attract cells to move towards their source, activate or chemoattract leucocytes, and mediate interactions between different cells. Therefore, the best definition of a cytokine is that it is an extracellular signal protein or peptide made by one cell that acts on another cell.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 27, 2011
    Quiz Created by
    Chachelly
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