other blood experiments - phyana lab Flashcards
normal clotting time
3-6 min
method used in bleeding time
duke’s method
volume of packed red cells after blood centrifugation
hematocrit
hematocrit also known as
PCV packed cell volume
measure of proportion of red cells to plasma in peripheral blood but not entire circulation
hematocrit
pigment in rnc that has affinity with oxygen
hemoglobin
the darker the color of the sample
the higher hemoglobin count
used in counting cellular elements of blood
hemacytometer
one type of counting chamber used in hemacytometry
neubauer improved counting chamber
how many primary square are in neubauer
1
how many secondary squares in neubauer
9
TOTAL number of smaller squares in central secondary sqaure
400
gives the relative proportion of leukocyte types
differential WBC count
increased in chronic infection
basophil and monocytes
acute infection
neutrophil
antibody reaction
lymphocytes
allergic reaction
eosinophil/
why discard drops
to push downwards the mixed solution
time it takes for a puncture wound to stop bleeding
bleeding time
bleeding time normal value
1-3 min
bleeding time depends upon the
depth of wound
degree of hyperemia
how does one develop Rh antiboides
when an Rh - is exposed to an Rh+ positive
importance of determining clotting time
assessing risk of excessive bleeding
liquid portion of blood that has no fibrinogen
serum
what indicates clotting time
Appearance of fibrin that goes with lancet
what must be done before putting blood sample on the slide (not for clotting time)
disinfect ring finger
wipe off first drop of blood
