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Questions and Answers

What function of blood is primarily related to the maintenance of body temperature?

  • Regulation of pH
  • Transport of nutrients
  • Protection from blood loss
  • Maintain body temperature (correct)
  • What is the primary function of albumin in plasma?

  • Blood clotting
  • Transport of hormones
  • Regulation of osmotic pressure (correct)
  • Immune response
  • Which of the following cellular components of blood is responsible for oxygen transport?

  • Platelets
  • Erythrocytes (correct)
  • Plasma cells
  • Leukocytes
  • The composition of plasma is approximately what percentage of total blood volume?

    <p>55%</p> Signup and view all the answers

    What is a key characteristic of mature red blood cells (RBCs)?

    <p>Biconcave shape</p> Signup and view all the answers

    Which plasma protein is primarily involved in the immune response?

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

    What is the average number of red blood cells per microliter of blood?

    <p>4.5 million</p> Signup and view all the answers

    What component of blood is primarily responsible for protection against disease?

    <p>White blood cells</p> Signup and view all the answers

    What is the lifespan of red blood cells (RBCs) before they are removed from circulation?

    <p>100-120 days</p> Signup and view all the answers

    What is the primary function of hemoglobin (Hb) in red blood cells?

    <p>To transport oxygen</p> Signup and view all the answers

    Which substance, if bound to hemoglobin, can lead to carbon monoxide poisoning?

    <p>Carbon monoxide</p> Signup and view all the answers

    What stimulates the production of more red blood cells in the bone marrow?

    <p>Decreased oxygen reaching the tissues</p> Signup and view all the answers

    Which type of anemia is characterized by the inability of the gastrointestinal tract to absorb vitamin B12?

    <p>Pernicious anemia</p> Signup and view all the answers

    How does the body primarily reclaim iron from broken down hemoglobin?

    <p>By incorporation into new hemoglobin</p> Signup and view all the answers

    What characteristic of blood influences its color when hemoglobin is in different states?

    <p>Oxygen binding to hemoglobin</p> Signup and view all the answers

    What is the average lifespan of most white blood cells (WBCs)?

    <p>A few days</p> Signup and view all the answers

    Which substance is primarily responsible for platelet aggregation?

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

    What happens during agglutination in blood transfusion reactions?

    <p>Antibodies cause antigen-containing cells to clump together.</p> Signup and view all the answers

    Which blood type has both A and B antigens?

    <p>Type AB</p> Signup and view all the answers

    What is the universal donor blood type?

    <p>Type O</p> Signup and view all the answers

    What role does thrombin play in blood clotting?

    <p>It converts fibrinogen to fibrin.</p> Signup and view all the answers

    Which blood type does not have antibodies against A or B antigens?

    <p>Type AB</p> Signup and view all the answers

    Which type of blood has antibodies against both A and B antigens?

    <p>Type O</p> Signup and view all the answers

    What is a potential risk when mixing blood types in transfusions?

    <p>Agglutination can block small vessels.</p> Signup and view all the answers

    What is the primary function of basophils in the immune response?

    <p>To release histamine and heparin</p> Signup and view all the answers

    Which type of white blood cell is primarily involved in combating parasitic infections?

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

    What percentage of neutrophils can typically be found in a normal white blood cell count?

    <p>50-70%</p> Signup and view all the answers

    What hormone stimulates the production of red blood cells?

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

    Which WBC type has a kidney-shaped nucleus and functions as a macrophage?

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

    What is the role of platelets during vascular damage?

    <p>Form a sticky plug</p> Signup and view all the answers

    Which of the following cells are responsible for producing antibodies?

    <p>B-lymphocytes</p> Signup and view all the answers

    Which white blood cell type is characterized by a nucleus that possesses 2-5 lobes?

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

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