blood physiology- lab 1 hematology Flashcards
(39 cards)
Transport functions of blood
deliver O2 and nutrients such as glucose and amino acids to body tissue cells, disposes of waste products such as CO2 and Nitrogenous waste, and transporting hormones to various parts of the body to regulate an organ function
other blood functions
regulate internal body temperature, body defense to prevent infection, acid/base balance, blood clotting to prevent blood loss after a blood vessel wall is torn
erythrocytes
red blood cells, responsible for transport of O2 to body tissue cells and removal of CO2 waste from interstitial fluid that surrounds body cells
leukocytes
white blood cells, defend body from viruses, bacteria, and other pathogens and microorganisms that can cause infection
thrombocytes
platelets, help prevent blood loss by forming collections of cells at the site of damage called clots when blood vessel walls are torn
of the 3 cell type, which is considered a true cell
leukocytes. erythrocytes and thrombocytes are not true because they can’t mitotically divide (no nucleus)
hemtopoieses
blood cell production
normal blood cell values
erythrocytes
males- 5.4 plus minus .8 mm cubed
females 4.8 plus. minus .6 mm cubed
leukpcytes
males 7-9000 per mm cubed
females 5-7000 per mm cubed
thrombocytes
150k to 400k per mm cubed, average 300k per mm cubed
hemoglobin
a molecule responsible for binding and carrying O2, to body tissue cells to help remove CO2 from body tissue.
if each gram of hemoglobin in the erythrocyte is completely O2 saturated, erythrocyte carries how much O2
1.34 ml O2. if there is 15 g Hb per 100 mL blood, 20 mL O2 carried in 100 mL blood
polycythemia
abnormally high number of RBC
anemia
occurs when there is an abnormal decrease in RBC number
anemic hypoxia
shortage in O2 delivery to body tissue cells
hematocrit
percent volume of blood that is made up of only erythrocytes
heparin
chemical that prevents formation of clots that would make blood drawing difficult
erythropoietin
erythrocyte strict regulation via this Horm one in the kidneys
normal values of hematocrit
male
46% (43-49%)
female
41% (36-45%)
which gender has a higher percentage of hematocrit
males
why do males have a higher hematocrit percentage usually
testosterone influences erythropoietin
how to calculate hematocrit
RBC height (mm) / heigh of red cells and plasma (mm) x 100
normal hemoglobin values
male 15.4 Hb/100mL (between 13.6-17.2)
female 13.3 Hb/100mL
(between 11.5-15.0)
what level is considered anemic for blood hemoglobin / when do we see major anemia issues
10 g Hb per 100 mL
we see issues at 7.5 g Hb per 100 mL
how can measuring blood hemoglobin levels be accomplished
potassium cyanide (KCN)
what colored compound is produced when hemoglobin is exposed to KCN (potassium cyanide)
cyanmethemoglobin
