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Was is another name for myelopoiesis?
Granulocytopoiesis
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The production of neutrophils, eosinophils, and basophils.
Myelopoiesis (Granulocytopoiesis)
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What is the generation time for myelopoiesis? (the time it takes for cells to mature from blast to mature cell)
7-11 days
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What stimulates the activation of myelopoiesis?
- Need - sensed by the body
- regulatory proteins
- leukopoietin
- CSF's
- interleukins
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- 1. Promyleocyte
- 2. Mitosis Ends
- 3. Metamyelocyte
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Granulocyte Production:
What occurs in the proliferative/mitotic pool?
Cells are growing and dividing
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Granulocyte Production:
What occurs in the maturation pool?
Represents the end of the DNA synthesis and division
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Granulocyte Production:
What occurs in the storage pool?
Retain mature cells for release into peripheral circulation
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State 4 of the 7 morphological changes that occur during granulopoiesis.
- Reduction in nuclear volume
- Condensation (densening) of chromatin
- Change in nuclear shape
- Appearance and disappearance of primary granules
- Appearance of secondary granules
- Color changes in cytoplasm from blue to pinkish- red
- Change in size of cells
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The earliest recognizable cell in the granulocytic series.
Myeloblasts
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Name that cell:
Round nucleus that stains predominantly reddish-blue
Smooth nuclear membrane
May see more in normal peripheral blood
Myeloblast
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Name that cell:
Contain granules that stain dark blue or reddish blue
May be round or irregular in shape
Granules appear scattered throughout the cytoplasm and may overlay the nucleus
Nucleus is usually round and large in relation to the cytoplasm
Not present in normal peripheral blood
Promyelocyte
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Name that cell:
Nuclei may be round, oval, or flattened on one side and eccentrally located.
Last myeloid precursor capable of division
Have relatively large amounts of cytoplasm that gradullay become more pinkish
Myelocyte
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Name that cell:
The nucleus becomes slightly indented (kidney bean shaped)
Do not divide
Do not have nucleoli
Absent in normal peripheral blood
Metamyelocyte
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Name that cell:
Nuclear identation is greater than half the width of the nucleus
Gives the appearance of a horeshoe
Nuclear chromatin is pyknotic
Band Neutrophils
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Name that cell:
Nucleus is divided into two to five lobes that are connected by a thin filament or strand
Segmented Neutrophil
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Signals sent by bacterial and inflammatory tissue.
Chempattratants
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Stages of Phagocytosis:
Neutrophil migrate toward __________
Neutrophil transforms - _______________
Penatrates into _____________
- site of signal
- pseudopods and a tail
- tissue (diapedsis)
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Moving to penetrate tissue
diapedesis
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(surface coated) directional migration under the guidance of chemoattractancts.
Chemotaxis
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Facilitates recognition and attachment by marking the organism for ingestion.
Opsonization
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Means to prepare for dining (greek term)
opsonin
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Identify the stage of phagocytosis:
Membrane surface receptor & microbe bind together
Ingestion
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Identify the stage of phagocytosis:
Ingested organism exposed to lytic activity of granular enzymes
Digestion
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Identify the stage of phagocytosis:
Leads to killing and digestion
Killing
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Determine if O2 dependent or O2 independent killing system
MPO +H2O2+CL-
O2 dependent
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Determine if O2 dependent or O2
independent killing system
Lysozyme and proteolytic enzymes
O2 independent
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What is the granule content for 10 granules? (primary)
Lysozyme, Myeloperoxidase, Acid Phosphatase, Elastase
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What is the granule content for 20 granules? (secondary)
Lysozyme, NADPH oxidase, Lactoferrin, Cytochrome B
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What is the granule content for 30 granules?
Plaminogen Activators, Alkaline Phosphotase, Gelatinase
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Identify cell by the following functions:
Active in allergic and parasitic infections
Detoxify foreign protein matter
Ingest antigen-antibody complexes before they damage the body
Eosinophils
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Identify cell by the followin functions:
In the tissue known as "mast cell"
Granular Content
histamine
heparin
Degranulate in allergic reations
Help to resist allergic reactions and anaphylactoid states
Basophils
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What is the normal range for total WBC count?
4,800 - 10,800/ul
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What is the normal range for Neutophils (Segs)?
- 1.4 - 6.5 X 103/ul
- 50-70% of the total white count
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What is the normal range for Eosinophils?
- 0 - 0.5 X 103/ul
- 0-4% of the total white count
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What is the normal range for Basophils?
- 0 - 0.2 X 103/ul
- 0-2% of the total white count
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Identify the cell:
Contain a large, round nucleus with a small or moderate amount of basophilic cytoplasm
Nuclear chromatin are thin, lose, evenly stained, not clumped
One to several nuclei are usually visible
Lymphoblast
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Identify the cell:
Intermediate chromatin pattern that has clumps in some areas
Parachromatin may be present in the nucleus(appears reddish-purple)
Necleus is round or indented
Nucleoli are less distinct than in lymphoblasts
Prolymphocytes
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Identify the cell:
Second most numerous cell in the blood
Cytoplasm:
is blue, varying intensity from to light to dark in different cells
Appears clear
Nucleus:
Round or slightly indentend
Diameter slightly larger or same size as normal erythrocyte
Lympohcyte
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Identify cell by the following function:
Participate in cell mediate immunity
T Cells
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Identify cell by the following functions:
Cause "cell Death"
Cause cell growth and regulation
Lymphokines
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Identify the cells by the following functions:
Participate in body immune response that is humoral immunity
Participate in antibody production
B Cells
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Identify the cell:
Represent the end stage of B-lymphocytic lineage
Not observed in PB smears of normal individuals
Plasma
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Identify the cell:
Larger than a mature neutrophil
Abundant cytoplasm in relation to the nucleus
Cytoplasm:
Dull gray-blue cytoplasm
Ground glass, cloudy appearance due to fine granules
Digestive vacuoles may be observed
Nucleus:
Kidney bean shaped, deeply folded or indented
Appearance of convolutions
Lacy, delicate chromatin
Monocyte
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Monocytes:
Peripheral Blood Span
14 hours
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Identify cell by the following functions:
Phagocytosis:
Ingest and kill bacteria
Remove dead and dying cells
Dematures metabolites
Antigen processing and Presentation
Stimulate T Cell response
Monocyte/Macrophage
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What is the first cell in the cell lineage of Megakaryopoiesis?
Megakaryoblast
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Identify the cell:
Largest bone marrow cell
Give rise to thromocytes
Proliferate through endomitosis
Megakaryocyte
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Identify the cell:
Anucleated cell
formed from megakaryocytes
Platelets/Thrombocytes
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How many days does it take to generate new platelets?
7 days
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What is the life span of platelets?
9 days
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Identify the cell by the following functions:
Maintenance of capillary integrity
Primary hemostasis
Platelets
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What is the normal range for platelets?
150,000 - 450,000uL
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What is a pathological cause of neutrophilia?
Drugs(i.e. epinepherine) - cause white cells to move from the marginating pool to the circulating pool
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What are some physiological causes for neutrophilia?
- Stress
- Exercise
- Excessive heat or cold
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What are some side effects of neutrophilia?
- Infection-fungal, bacterial, viral, parasitic, and rickettsial
- Inflammatory disorders
- tissue necorsis
- neoplasms
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Reactive response to a stimulus that causes a high rise in neutrophils
Leukemoid Reaction
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Absolute decrease in circulating neutrophils
Neutropenia
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What are some causes of neutropenia?
- Overwhelming infections
- Idiosyncratic drug reactions
- Autoimmune Disorders
- Aplastic anemia
- Malignant disorders replacing BM
- Megloblastic Anemia
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Identify disease:
Recurrent bacterial infections
giant lysosomal granules
mild bleeding tendencies
death as a result of infection
Chediak-Higashi Syndrome
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Identify disease or defect:
5 or more segments in 1 - 2% of PMN's
Seen in megaloblasic Anemia
Hypersegmentation
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Deeply stained, coarse azurophilic (10) granules, rich in myeloperoxidase, changes are transient.
Toxic Granulation
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Grey-blue inclusions in the cytoplasm within the periphery.
Dohle Bodies
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FIll in the blanks
Leukocyte Alkaline Phosphatase (LAP) stain
* Reflects ____________________ activity.
* ________________ in infections (__________response)
* Differentiates leukemoid reaction from ___________ (CML)
* Ranges:
Males: __________ and Females: ___________
- Intracellular Metabolic
- Increased; Reactive
- leukemia
- Males: 22-124; Females 22-149
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What are two types of Neutropenia?
Aquired and Congenital
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Morphological changes in neutrophil cytoplasm
Dark-staining coarse cytoplasmic granules
Seen in association with inherited disorders of mucopolysaccharidosis
Alder Reilly Bodies
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Causes hyposegmentation
Associated with no physiological disease
Pelger Huet Anomaly
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Causes hyposegmentation due to drug ingestion
Pseudo Pelger Huet
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Giant Platelets (Thrombocytopenia)
Dohle-like inclusions in neutrophils.
May Hegglin Anomaly
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Name 3 causes for Eosinophilia.
- Skin disorders
- Pulmonary Disorders
- Other inflammatory disorders
- Metazoic Parasites
- Allergic conditions/Hypersensitvity Reactions
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Name 3 causes for Basophilia.
- Infections(chicken pox, small pox, influenza)
- Immediate hypersensitivity reactions
- Myeloproliferative diseases
- Associated with inflammatory bowel disease
- Endocrine disorders
- exposure to radiation
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Indicates the red cell is normal in color.
Normochromic
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"low color" cells have less than the normal amount of hemoglobin.
hypochromic
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How is color for RBC's measured?
Mean Corpuscular Hemoglobin Concentration. (MCHC)
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What is the formula for mean corpuscular volume (MCV) and what does it measure?
- HCT(%) x 10 / RBC count
- Gives us size
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What is the formula for mean corpuscular Hgb concentration (MCHC) and what does it measure?
- Hgb(g/L) x 100 / Hct(%)
- Gives us color
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What is the formula for mean corpuscular Hgb and what does it measure?
- Hgb(g/L) x 10 / RBC count
- Give weight of Hgb in the mean cell population
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Variation in cell size
Anisocytosis
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An index of the variation in cell volume within the red cell population
Red Blood Cell Distribution Width (RDW)
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Variation in cell shape
Poikilocytosis
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Identify the cell:
Pieces (fragments) of RBC's
Result of some trauma to the cell membrane
Schistocyte
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Identify the cell:
10-30 rounded spicules evenly placed over the surface of the red cell
Associated with Uremia
Burr Cell
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Identify the cell:
Not biconcave
Increased permeability to sodium; leads to increased osmotic fragility
Stomatocytes
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Identify the cell:
3 to 12 spicules of uneven length distributed along the periphery of the cell membrane
Acanthocytes
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Identify the cell:
Result of an increase in RBC surface membrane
Target cells
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Identify the cell:
Pear shaped or tear shaped
Teardrop cell
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Identify the cell:
Crescent or sickle shaped
Hgb is rigid, inflexible cells with pointed projection
Sickle cell
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Identify cells:
Membrane of the cell is altered
Missing pieces represents macrophages trying to clear things out
Helmet Cells
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Identify cells:
Smaller than normal RBC
Concentrated hemoglobin content
Spherocytes
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Identify cells:
Gray-blue in color, larger in size than normal RBC
Polychromasia
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Identify cells:
DNA remnants
Howell-Jolly bodies
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Identify cells:
Ribolnucleoprotein, mitochondrial remnants
Fine/coarse blue dusting
Basophilic stippling
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Identify cells:
Denatured hemaoglobin
Crystal violet/brilliant cresyl blue stain
Heinz bodies
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Identify the cells:
Figure 8 beads
Cabot rings
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Identify the cells:
Small ireggular granules
Pappenheimer bodies
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What is going on in this picture? (Hint: it occurs at room temp)
Agglutination
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What is going on in this picture?
Rouleaux
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Fill in the blank:
RBC function is dependent on it's ___________ and _________.
structure; metabolism
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What is red blood cells primary function?
Primary means is to carry oxygen to distal tissue.
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What are the functions of the RBC membranes?
- Controls transport across the membrane and flexibility through small spaces.
- Highly elastic
- Responds to fluids changes
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What is the red blood cell membrane composed of?
- 50% proteins
- 42% lipids
- 8% COH (carbohydrates)
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Name the 3 layers that make up the rbc membrane.
- Outer Layer
- Central Layer
- Inner Layer
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What is the outer layer composed of?
Glycolipids, glycoproteins, and proteins
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What is the central layer composed of?
Proteins, phospholipids and cholesterol
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What is the inner layer composed of?
Proteins
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Membrane Proteins:
Integral Protein
Span entire thickness of bilayer
Appears on external surface of membrane
Location of RBC antigens
Isolate and regulate cell interior
Glycoproteins
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Membrane Proteins:
Peripheral Protein
Most abundant
Strengthens membrane
Controls biconcave shape
Protect from breakage
Spectrin
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What is able to freely pass through the rbc membrane?
H 2O
- Anions:
- Chloride (Cl-)
- Bicarbonate (HCO
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What is unable to freely pass through the rbc membrane?
- Cations:
- Potassium (K+)
- Sodium (Na+)
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Conjugated globular protein.
Hemoglobin
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What is the makeup of a Hgb molecule?
- Composed of two like pairs of globin chains (polypeptide chains) Alpha and Beta chain.
- 4 heme groups, 1 attached to each polypeptide chain
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