CB3 Flashcards
in a 70kg man blood volume is ___
5.6L
in a 70kg man blood takes up ___ % of body weight
7-8
blood is ____% water and ___% solids
78, 22
temp of blood
38 degree celcius
ph of blood
7.35-7.45
2/3 of red marrow is dedicated to ______ and 1/3 is dedicated to _______
leucopoiesis, erythropoiesis
there are 500x more _____ than ____
erythrocytes, leukocytes
all peripheral blood cells are derived from a single ______ stem cell
multipotent
progenitor cells divide to produce (5)
erythrocytes, megakaryocytes, granulocytes, lymphocytes, monocytes
differentiated cells lose their capacity for ______
self renewal
stem cells acct for
0.1
what do erythrocytes leave when they leave the marrow
they lose Cell Adhesion Molecules (CAM’s)
what are CAM’s
they allow cells to leave marrow and enter circulation
haemopoiesis requires growth factors such as (4)
erythropoietin, colony stimulating factors, interleukins, and thrombopoietin
structure of hemoglobin in adults and children
adult = alpha2beta2 children = alpha2gamma2
1/3 of thrombocytes are stores in blood filled spaces in _____
spleen
as the fetus develops, the responibility of erythropoiesis changes from ____ to ____ to ____ to ____
yolk sac, liver, spleen, red bone marrow
process in adults from stem cell to erythrocyte
stem cell/hemocytoblast - proerythroblast - early erythroblast - late erythroblast - normoblast - reticulocyte - erythrocyte
1 proerythroblast turns into how many RBC’s
16
RBC’s are replaced at an avg rate of ______ million cells per second
2-3
haemoglobin components, such as globin, iron, and heme, can be ______
recycled
what nutritional aspects affect the maturation and production of RBC’s
aa’s, vitamins (b12 and folate), and iron
______ is one of the most commonly ordered laboratory tests
full blood count, complete blood count
FBC/CBC measures ____ cell counts
RBC, WBC, and platelets
forumla for RBC count =
(4-5-5.4) x 10^6 /mL
or
(4-5-5.4) x 10^12/mL
reticulocytes % should equal
0.2 - 2
packed cell volume measures the fraction of blood occupied by ____
erythrocytes
packed cell volume should be ____ %
45
hemoglobin should be __-__ g/dL in males and ___-___ g/dL in females
14,18,12,16
the amt of Hb in blood is an indicator of _____ binding capacity
iron
what does it mean if the mean cell volume is high
the size of red blood cells is high
mean cell heamoglobin measures the _____
avg amt of hemoglobin in a RBC
mean cell hemoglobin concentration is the _____
amt of hemoglobin per dL RBC
range of Mean cell volume =
80-90 fL
range of mean cell Hb
27-33 pg
range of MCHC
32-35 g/dL
clinical signs of anemia
fatigue and weakness, pallor, koilonychia, angular stomatitis, glossitis
what is pallor
paleness
what is koilonychia
nail curves upward (spoon shaped)
what is angular stomatitis
deep cracks and splits at corner of mouth
what is glossitis
inflammation/infection of tongue
what is included in a basic clinical evaluation
review of blood count/blood smear, RBC indices, reticulocyte index, and determination of short term/long term
what are the 2 types of hypochromic-microcytic anaemia
iron deficiency and STOPPED AT SLIDE 32 CB3