Chapter 19 : Blood Flashcards
thrombopoietin
a hormone produced by the liver that stimulates the formation of platelets from megakaryoctyes
each oxygen molecule picked up from the lungs is bound to an ______
iron ion
hemoglobin releases
oxygen
hemoglobin
a pigment that gives blood its red color
healthy adult male has _____RBC per microliter
5.4 million
multipotent stem cells aka hemocytoblasts
differentiate
components of blood percentage
blood plasma = 90% water
blood plasma proteins = 7% albumins, fibrinogen, globulins
other solutes = 1.5%
hematocrit
percentage of total blood volume occupied by RBCs
Platelets
the final type of formed element, are fragments of cells that do not have nucleus
release chemicals that promote blood clotting
a significant drop of hematocrit =
anemia
anemia
lower than normal number of RBCs
polycythemia =
percentage of RBCs is abnormally high
blood plasma
straw colored liquid
RBCs
aka erythrocytes transport O2 from lungs to body cells and deliver CO2 from body cells to lungs
hemopoiesis
process where formed elements of blood develop
megarkayocytes produce and are the source of
platlets
granulocytes
neutrophils
basophils
eosinophils
agranulocytes
monocytes
lymphocytes
erythropoitein
increases the number of red blood cell precursors
erythropoiesis
production of RBC’s
reticulocyte
maturing RBC that ejects nucleus
WBCs
have nuclei and organelles
leukocytosis
increase in WBCs
leukopenia
decrease in WBCs