Neutrophil and Eosinophil Morphology Quiz
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Questions and Answers

What is the size range of a segmented neutrophil?

  • 12-16 um
  • 15-20 um
  • 10-15 um (correct)
  • 8-10 um

Which cell type makes up less than 1% of the nucleated cells in the bone marrow and 5% of peripheral WBCs?

  • Segmented neutrophil
  • Basophil
  • Eosinophil (correct)
  • Lymphocyte

What is the typical nucleus shape of an eosinophil?

  • Tri-lobed
  • Unilobed
  • Multi-lobed
  • Bilobed (correct)

Which type of granules contain heparin and histamine?

<p>Purple-black granules (D)</p> Signup and view all the answers

What is the N:C ratio of a neutrophil?

<p>1:3 (B)</p> Signup and view all the answers

What makes up less than 0.1% of the nucleated cells in both the bone marrow and peripheral blood?

<p>Basophil (B)</p> Signup and view all the answers

Which cell type has cytoplasm filled with small, pale blue to pink specific/secondary granules?

<p>Segmented neutrophil (D)</p> Signup and view all the answers

What is the characteristic feature of the nucleus of a segmented neutrophil?

<p>Coarse, clumped chromatin with 3-5 lobes (A)</p> Signup and view all the answers

Which cell type makes up 12% of the nucleated cells in the bone marrow?

<p>Segmented neutrophil (C)</p> Signup and view all the answers

What is the typical size range of a basophil?

<p>10-15 um (C)</p> Signup and view all the answers

What is the main content of the cytoplasmic granules in an eosinophil?

<p>Enzymes and proteins (A)</p> Signup and view all the answers

Which cell type has cytoplasm containing large, purple-black, secondary granules?

<p>Basophil (A)</p> Signup and view all the answers

What recognizable maturation stages are present in an eosinophil?

<p>Myelocyte, metamyelocyte, band, and segmented form (D)</p> Signup and view all the answers

What is the N:C ratio of a neutrophil?

<p>$1:3$ (A)</p> Signup and view all the answers

Which pool contains metamyelocytes, bands, and segmented neutrophils in the bone marrow?

<p>Post-mitotic pool (C)</p> Signup and view all the answers

What attracts neutrophils to the site of inflammation?

<p>Complement and bacterial products (A)</p> Signup and view all the answers

Which process involves neutrophil attachment to a foreign object, formation of a vacuole around it, and release of lytic enzymes?

<p>Phagocytosis (A)</p> Signup and view all the answers

What is the fate of neutrophils when they are destroyed in the process of phagocytosis?

<p>They undergo cell death through apoptosis (C)</p> Signup and view all the answers

Where is the rapid and free exchange of neutrophils between different pools observed?

<p>Circulation system (B)</p> Signup and view all the answers

What is the main content of the cytoplasmic granules in a neutrophil?

<p>Myeloperoxidase (A)</p> Signup and view all the answers

What type of granulocyte pool mainly contains neutrophils that adhere to vessel walls?

<p>Marginating granulocyte pool (B)</p> Signup and view all the answers

What releases neutrophils into circulation when they are mature or needed?

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

What do opsonins such as IgG and complement component C3b help neutrophils recognize as foreign?

<p>Antigens (C)</p> Signup and view all the answers

Where do neutrophils diapedese into the tissues from in response to antigenic stimulation?

<p>Marginating granulocyte pool (C)</p> Signup and view all the answers

What is indicated by the presence of colorless areas in the cytoplasm of neutrophils?

<p>Toxic vacuolation (B)</p> Signup and view all the answers

What is the most common type of left shift associated with an increased demand for neutrophils?

<p>Regenerative shift to the left (C)</p> Signup and view all the answers

What is indicated by the presence of small oval inclusions (RNA) located in the cytoplasm of neutrophils?

<p>Dohle bodies (B)</p> Signup and view all the answers

What is the appropriate bone marrow response to increased demand for neutrophils?

<p>Regenerative shift to the left (B)</p> Signup and view all the answers

What is associated with an increased number of myelocytes, metamyelocytes, and/or bands in the peripheral blood?

<p>Shift to the left (D)</p> Signup and view all the answers

What change in neutrophils is seen after an overwhelming infection in which bone marrow production cannot keep up with increased need for neutrophils?

<p>Degenerative shift to the left (A)</p> Signup and view all the answers

What change in neutrophils refers to prominent granulation due to persistent staining of primary granules?

<p>Toxic granulation (A)</p> Signup and view all the answers

Which type of cell releases substances that can neutralize products released by basophils and mast cells, and also modulate the allergic response?

<p>Eosinophils (B)</p> Signup and view all the answers

What initiates the classic signs of immediate hypersensitivity reactions (Type I) by releasing histamine upon degranulation?

<p>Basophils (D)</p> Signup and view all the answers

Which type of cell expresses Fc receptors for IgE in response to parasitic infections?

<p>Eosinophils (A)</p> Signup and view all the answers

Which cell type releases a chemotactic factor that attracts eosinophils to the site of inflammation?

<p>Basophils (D)</p> Signup and view all the answers

What is the cause of neutropenia due to chronic or severe infection?

<p>Depletion of available neutrophil reserves (A)</p> Signup and view all the answers

What is a characteristic associated with basophilia?

<p>Type I hypersensitivity reactions (B)</p> Signup and view all the answers

What can cause an increase in eosinophils?

<p>Allergic reactions (B)</p> Signup and view all the answers

What is a potential cause of basopenia?

<p>Inflammatory states (A)</p> Signup and view all the answers

What disorder is associated with the presence of immature leukocytes and immature erythrocytes in the blood?

<p>Myelofibrosis (A)</p> Signup and view all the answers

What can cause a decrease in absolute number of neutrophils?

<p>Vitamin B12 deficiency (D)</p> Signup and view all the answers

What is a potential cause for the decrease in the absolute number of basophils?

<p>Inflammatory states (A)</p> Signup and view all the answers

What can lead to an increase in the absolute number of eosinophils?

<p>Parasitic infections (D)</p> Signup and view all the answers

What can cause neutropenia due to bone marrow production defects?

<p>Bone marrow injury (aplastic anemia) (A)</p> Signup and view all the answers

What is the main difference between physiologic pseudoneutrophilia and pathologic neutrophilia?

<p>Bone marrow reserves are released into the blood in pathologic neutrophilia, but not in physiologic pseudoneutrophilia. (A)</p> Signup and view all the answers

What distinguishes the neutrophilic leukemoid reaction (NLR) from chronic myelogenous leukemia?

<p>NLR is a benign, extreme response to a specific agent or stimulus, while chronic myelogenous leukemia is not. (B)</p> Signup and view all the answers

What differentiates physiologic pseudoneutrophilia from pathologic neutrophilia?

<p>Caused by exercise, stress, pain, pregnancy in physiologic pseudoneutrophilia, but not in pathologic neutrophilia. (D)</p> Signup and view all the answers

What is a distinguishing feature of neutrophilic leukemoid reaction (NLR) compared to physiologic pseudoneutrophilia?

<p>WBC count increase to between 50 and 100 X 109/L in NLR, but not in physiologic pseudoneutrophilia. (B)</p> Signup and view all the answers

What distinguishes pathologic neutrophilia from neutrophilic leukemoid reaction (NLR)?

<p>Bone marrow increases production of neutrophils to replenish reserves in pathologic neutrophilia, but not in NLR. (A)</p> Signup and view all the answers

What sets physiologic pseudoneutrophilia apart from neutrophilic leukemoid reaction (NLR)?

<p>Caused by exercise, stress, pain, pregnancy in physiologic pseudoneutrophilia, but not in NLR. (C)</p> Signup and view all the answers

What differentiates the shift observed in pathologic neutrophilia from that seen in physiologic pseudoneutrophilia?

<p>Bone marrow reserves are released into the blood in pathologic neutrophilia, but not in physiologic pseudoneutrophilia. (A)</p> Signup and view all the answers

What is the underlying cause of chronic granulomatous disease (CGD)?

<p>Congenital enzymatic defect of NADPH oxidase in platelets and monocytes (A)</p> Signup and view all the answers

What is the characteristic feature of Chediak-Higashi syndrome?

<p>Abnormal intracellular protein transport (B)</p> Signup and view all the answers

What is the main cause of hypersegmentation in neutrophils?

<p>Vitamin B12 or folic acid deficiencies (A)</p> Signup and view all the answers

What is the morphological difference between hypersegmentation and hyposegmentation?

<p>5 or more lobes vs 1 or 2 lobes (B)</p> Signup and view all the answers

What is the main consequence of the inability of neutrophils to degranulate in CGD?

<p>Inhibited bactericidal function (B)</p> Signup and view all the answers

What is the genetic basis of Chediak-Higashi syndrome?

<p>Autosomal recessive inheritance (B)</p> Signup and view all the answers

What distinguishes Pelger-Huet anomaly from hypersegmentation?

<p>Hyperclumped nucleus (A)</p> Signup and view all the answers

What is the main concern associated with morphologically normal but functionally abnormal leukocytes?

<p>'Left shift' on blood smear (B)</p> Signup and view all the answers

'Left shift' on blood smear is indicative of:

<p>Increase in immature white blood cells (B)</p> Signup and view all the answers

What differentiates hypersegmentation from hyposegmentation?

<p>5 or more lobes vs 1 or 2 lobes in neutrophils (D)</p> Signup and view all the answers

What is the characteristic associated with Chediak-Higashi syndrome?

<p>Abnormal intracellular protein transport (A)</p> Signup and view all the answers

What is the main difference between MAY-HEGGLIN ANOMALY and ALDER-REILLY ANOMALY?

<p>Presence of large azurophilic granules (B)</p> Signup and view all the answers

Which anomaly is associated with autosomal dominant inheritance?

<p>MAY-HEGGLIN ANOMALY (B)</p> Signup and view all the answers

What is the characteristic feature of ALDER-REILLY ANOMALY?

<p>Degraded mucopolysaccharides in cytoplasmic granules (C)</p> Signup and view all the answers

What distinguishes the cytoplasmic anomalies described in the text from toxic granulation present in neutrophils only in infectious conditions?

<p>Morphological appearance of neutrophils (A)</p> Signup and view all the answers

Which growth factors and interleukins act on the committed progenitor cell, CFU-GM, to form monocytes?

<p>GM-CSF and IL-5 (B)</p> Signup and view all the answers

Where in the body do Kupffer cells primarily function?

<p>Liver (C)</p> Signup and view all the answers

What is the name for the macrophages found in the central nervous system?

<p>Microglial cells (C)</p> Signup and view all the answers

What is the characteristic feature of the transition from promonocyte to monocyte?

<p>Transition from indented to round/oval nucleus (D)</p> Signup and view all the answers

What distinguishes the macrophage from the other monocyte precursors?

<p>Blue-gray cytoplasm with many vacuoles (C)</p> Signup and view all the answers

What is the main difference between a monoblast and a promonocyte?

<p>Size and N:C ratio (B)</p> Signup and view all the answers

What distinguishes a monocyte from a promonocyte?

<p>Shape and chromatin density of the nucleus (A)</p> Signup and view all the answers

What is the most likely feature of a macrophage compared to a monoblast?

<p>Increased size and N:C ratio (A)</p> Signup and view all the answers

What is the distinguishing feature of a promonocyte compared to a monocyte?

<p>&quot;Brainlike&quot; convolutions in the nucleus (C)</p> Signup and view all the answers

What is the main function of monocytes/macrophages in the immune response?

<p>Initiating and regulating the immune response (C)</p> Signup and view all the answers

Which cells are known as 'scavenger cells' due to their ability to ingest foreign material?

<p>Monocytes/macrophages (A)</p> Signup and view all the answers

What do blood monocytes ingest, limiting the coagulation response?

<p>Activated clotting factors (A)</p> Signup and view all the answers

Which cells are very efficient phagocytic cells with receptors for IgG or complement-coated organisms?

<p>Monocytes/macrophages (D)</p> Signup and view all the answers

Where do splenic macrophages primarily remove old/damaged red blood cells?

<p>Spleen (C)</p> Signup and view all the answers

What do bone marrow macrophages remove and store for hemoglobin synthesis?

<p>Iron (C)</p> Signup and view all the answers

What do monocytes secrete, in addition to cytokines/interleukins and tumor necrosis factor?

<p>Antibodies (D)</p> Signup and view all the answers

What is the primary function of liver macrophages?

<p>Removing fibrin degradation products (C)</p> Signup and view all the answers

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