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White Blood Cells
white blood cells are also called this
the only formed elements in blood that are complete cells (have nuclei)
the production of WBCs
nucleated cells and do not contain hemoglobin
two principle types of WBC
eosinophils, basophils, neutrophils
three different types of granular leukocytes
monocytes and lymphocytes fall under this category
WBC emigrate between cells lining walls of capillaries by this process
number of cells per drop of blood
high white blood cell count
microbes, anesthesia, surgery
list a few causes of high WBC count
low white blood cell count
radiation, shock, chemotherapy
list a few causes of low WBC count
what percent of the total WBC population is in circulation?
lymphatic fluid, skin, lungs, lymph nodes, spleen
list a few places where the majority of WBC reside
differential WBC count
detection of changes in numbers of circulating WBC
infection type, infection
what does differential WBC count indicate?
WBC leave the blood stream via _______________
some WBCs are active in ____________________
which WBCs are particularily active in phagocytosis?
the chemical attraction of WBCs to a disease or injury site is _______________
a granulocyte with 2 to 5 lobes and fine, pale lilac granules
percentage of neutrophils found in circulating WBCs
fast response action to bacteria, release lysozymes, defensin and oxidants
granulocytes with 2 to 3 lobes; is roughly 2 to 4 percent of circulating WBCs
these release histaminase and attacks parasite worms
large, dark purple granular granulocyte that is less than one percent of circulating WBCs
involved in inflammatory and allergy reactions
these release heparin, histamine, and serotonin
agranulocyte that has a dark oval nucleus; increase in number due to viral infections
percentage of lymphocytes in WBCs
destroy bacteria and their toxins
attack viruses, fungi, transplanted organs, cancer cells, and bacteria
attack many different microbes and some tumor cells
nucleus is kidney-shaped; largest WBC in circulation
percentage of monocytes within in the blood stream
these become wandering macrophages and destroy microbes, cleaning up dead tissue found in an infection
myeloid stem cells
these develop into a megakaryocyte
splinters into 2000-3000 fragments
also called thrombocytes
platelets contain NO _________
how many days do platelets typically last?