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circulatory system: part I
blood anatomy
16
Anatomy
Undergraduate 2
01/31/2011

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Term
What is blood composed of?
Definition
Formed elements(cells+cell fragments) & plasma(water+dissolved substances)
Term
Name all of the white blood cells.
Definition
Neutrophils, Eosinophils, Basophils, Monocytes, Lymphocytes
Term
What cells produce platelets?
Definition
Megakaryocytes
Term
Does a mature RBC contain a nucleus?
Definition
no
Term
What chemicals are secreted by your granular leukocytes & what are their functions?
Definition
Neutrophils – lysozyme – antibacterial
Eosinophils – major basic protein – anti-parasitic worm agent
Basophils – Histamine – vasodilator & Heparin - anticoagulant
Term
What does a plasma cell secrete?
Definition
antibodies
Term
What does a cytotoxic T-cell secrete?
Definition
Perforin
Term
What is the function of a macrophage after phagocytizing a pathogen to stimulate the specific immune response?
Definition
Presents the antigenic portion of the pathogen to B & T-cells via MHC class II receptors
Term
Name the plasma proteins and the function of each.
Definition
Albumins – maintain osmotic pressure
Globulins – forms antibody structure
Fibrinogens – blood clotting
Term
what are the functions of blood?
Definition
transportation, regulating, protection(clotting)
Term
in blood plasma, what do proteins, albumins, globulins, and fibrinogens do?
Definition
proteins=maintain proper blood osmotic pressure
albumins=maintain osmotic blood pressure
globulins=antibodies
fibrinogens=blood clotting
Term
what is hematopoiesis?
Definition
formation of blood cells
Term
where do Pluripotent hematopoeitic stem cells come from and what do they give rise to?
Definition
mesenchyme, all five precursor cells
Term
what are the 5 precursor cells and what do they do?
Definition
Proerythroblasts (rubriblasts) = form mature RBCs
Myeloblasts = form mature neutrophils, eosinophils, & basophils
Monoblasts = form monocytes
Lymphoblasts = form lymphocytes
Megakaryoblasts = form mature platelets
Term
what is Erythropoiesis?
Definition
RBC formation(begins in red bone marrow)
Term
what is a Reticulocyte?
Definition
late erythroblast ejects nucleus; retains some organelles; enters the bloodstream via diapedesis -amoeboid movement through capillary pores
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