Neutrophils/basic WBC Flashcards
what is the prupose of WBC?
to defend the body against foreighn organisms or chemicls and remove debris that result from dead injured cells.
where can most WBC be found?
in the tissues, most are not functional in the blood stream
what are the two types of WBC?
granulocytes and Agranulecytes
what are granulocytes?
contain granules within the cytoplasm
what are 3 types of granulocytes?
neutrophils, eosinofils, basophils
what are the components to a Wright Stain/diff quick?
fixer,red, blue
what are two types of agranulocytes?
lymphocytes and monocytes
how are granulocytes produced?
from undifferentiated stem cells in the red bone marrow
what are the four stages of WBC growth
Myeloblasts, promyelocyte, myelocyte, band (neutrophils)
what are myeloblasts?
non-granular cytoplasm, blue with round red nucleus. nucleoli
what are promyelocytes?
has distinct granules present, no nucleoli
what is a myelocyte?
granules differentiate, will stain blue or red
what is a band?
immature form, nucleus is shape in a smooth horshoe
what number is considered a high demand for neutrophils?
7300/ml
what type of WBC cannot return to the bloodstream? granulocytes or agranulocytes?
granulocytes
what are neutrophils also known as?
polymorphonucleated leukocytes
What type of WBC is considered highly phagocytic and motile?
neutrophils
what is the function of neutrophils?
first line of defense against infection by migrating to bacteria and can break down necrotic tissue
what does an increase of neutrophils normally mean?
actue infection is present
what is the average transit time for a neutrophil in blood?
10 hours
how often are neutrophils replaced?
every 2.5 days
how are neutrophils lost?
through secretions and excreted through mucus membranes
what does the neutrophils nucleus look like?
dark purple and convoluted
what species has neutrophils with cytoplasm with pail pink dust like granules?
cat/dog
which species have extremely jagged nuclear membrane, and the cytoplasm stains pale pink with fine granules?
horse
Which species have nuclear membranes that have 1 or more points that pinch together and granules are faintly visable and give an orange color to the cytoplasm?
bovine
in a D/C/H/G/S how many neutrophils is normal?
60-70%
In a cow, how many neutrophils is normal?
10-40%
