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45 Cards in this Set
- Front
- Back
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Basophils Description
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coarse dark cytoplasmic granules; nucleus is often obscured
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Eosinophils Description
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large red cytoplasmic granules; bi-lobed nucleus
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Erythrocytes Description
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Biconcave discs; no nucleus
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Lymphocytes Description
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Large nucleus with very little cytoplasm; no
cytoplasmic granules visible |
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Monocytes Description
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horseshoe or U-shaped nucleus; no cytoplasmic granules visible
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Neutrophils Description
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fine pink-purple cytoplasmic granules; multi-
lobed nucleus (3-6 lobes) |
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Platelets Description
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Cytoplasmic fragments; no nucleus or organelles
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Basophils General Function
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Release heparin (prevents blood coagulation) & histamines
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Eosinophils General Function
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Involved in parasitic worm infestations (most important function) and allergic responses
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Erythrocytes General Function
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transport of respiratory gases ( oxygen & carbon dioxide)
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Lymphocytes General Function
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Involved in immune response and antibody production
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Monocytes General Function
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Phagocytic; long-term response
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Neutrophils General Function
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Phagocytic; quick response
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Platelets General Function
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Blood clotting
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What type of Leukocyte is this & is this considered a Granulocyte or Agranulocyte?
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Basophil: Granulocyte
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What type of Leukocyte is this & is this considered a Granulocyte or Agranulocyte?
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Eosinophil; Granulocyte
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What type of Leukocyte is this & is this considered a Granulocyte or Agranulocyte?
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Lymphocyte; Agranulocyte
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What type of Leukocyte is this & is this considered a Granulocyte or Agranulocyte?
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Monocyte; Agranulocyte
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What type of Leukocyte is this & is this considered a Granulocyte or Agranulocyte?
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Neutrophil; Granulocyte
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What is blood?
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A liquid connective tissue made up of plasma and formed elements.
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What is blood composed of ?
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Plasma, Serum & Formed Elements
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What is another name for red blood cells?
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Erythrocytes
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What is hematocrit?
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The percentage of the blood volume that consists of erythrocytes
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True or False: Erythrocytes have a nucleus and cellular organisms
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False
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What is the pcv (pack rate volume) of erythrocytes?
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~45-50%
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What term is used to describe the process of erythrocyte (RBC) production?
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Erythropoiesis
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How is erythropoiesis stimulated?
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By Erythropoietin hormone that is produced by the liver and activated from the kidneys.
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Do erythrocytes contain a cytoplasm?
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Yes
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What is found in the erythrocytes cytoplasm?
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4 hemoglobin molecules ( Oxygen carrying protein)
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What does each hemoglobin molecule contain?
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consists of 4 chains of amino acids ( each bear iron atom that is binding site for Oxygen)
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What element is necessary for hemoglobin to avidly bind to oxygen with erythrocytes?
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Ferrous Iron
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What Special structural characteristics in erythrocytes contribute to respiratory function?
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o Shape (biconcave) provides 30% more Surface area allowing rapid diffusion of Oxygen
o Are composed of 97% hemoglobin which means they are solely oxygen molecules o Generate energy through anaerobic mechanisms ; don’t consume any Oxygen which make them efficient transporters |
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Where do erythrocytes originate?
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From bone marrow where nucleus & organelles are expelled before entering blood stream
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True or false: Erythrocytes have a short life span
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True; they live 100-120 days
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True or False: When blood is spun in a centrifuge , the heavier elements are packed down by centrifugal force.
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True
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Where are erythrocytes located in the blood sample after it has been spun in a centrifuge?
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At the bottom of the tube
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What makes up the buffy coat and where is it located on a a blood sample that has been recently centrifuged?
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Buffy coat is present at the junction between the erythrocytes and the plasma. It contains leukocytes & thrombocytes .
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True or False: Leukocytes are complete cells with organelles & prominent nuclei
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True
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True or False: Leukocytes Function outside of blood stream in loose connective tissue
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True
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Describe Granulocytes
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-contain many obvious granules
-Large & short lived -Phagocytic |
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Name the 5 types of Leukocytes present in the body.
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Neutrophils, Leukocytes,Monocytes, Eosinophils, Basophils
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What is another word for platelets?
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Thrombocytes
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What are thrombocytes?
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Disc shaped plasma membrane enclosed fragments of cytoplasm that form by breaking off of larger cells called megakaryocytes
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What molecule released by thrombocytes help initiate clotting?
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Thromboplastin
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What is clotting?
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A sequence of chemical reactions in blood plasma that ultimately generates a network of tough
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