blood cells Flashcards
most numerous cells
erythrocytes
no of erythrocytes in human
4-6*10^6 /ul
no of erythrocytes in goat
14-16 million/ul
no of erythrocytes in poultry
2-3 million/ul
which rbc are nucleated
biconvex RBCs of poultry
which family has elliptical rbc
camilidae
diameter of rbc
7-8um
rbc of variable shape seen in
goat(anisocytosis)
mcv expressed in
femtolitre
mch expressed in
picogram
mchc expressed in
percentage
when does erythropoiesis start
pre natal life
how long does erythropoiesis last
life long
organ of erythropoiesis in
1.pre natal life
2. late fetal life
3. young ones
4. adults
- yolk sac
- liver and spleen
3.bone marrow of long bones - bone marrow of flat bones
which parts of the body retain the ability to produce rbc
liver spleen and thymus in case of defect in bone marrow
precursor of RBCs
stem cells or common progenitor cells
erythropoietin-
1. release cause
2. release site
3. target organ
- hypoxia
2.kidneys - bone marrow
different stages of erythrocyte development
erythroblast/rubriblast—–rubricyte—–polychromatic rubricyte—–reticulocyte(has a small amt of nuclear material)—–mature rbc
which stage does hb develop in rbc
polychromatic rubricyte
vitamins required for erythropoiesis
sino cobal amine(B12) and folic acid
minerals requid for erythropoiesis
cobalt and iron(+2)
lifespan of horse rbc
140 days
lifespan of cattle rbc
90 days
lifespan of human rbc
120 days
