Lecture Exam 1 practice Flashcards
(94 cards)
Vitamin K is essential for what blood function?
Coagulation
Put the following events of stopping blood in order:
Platelet aggregation
Platelet adhesion
Clot formation
Vasoconstriction
- Vasoconstriction
- Platelet adhesion
- Platelet aggregation
- Coagulation
List the 3 types of granulocytes and their functions
- Neutrophils - most numerous and phagocytosis
- Basophils- intensify allergic reactions and inflammation.
Releases histamine and heparin - Eosinophils- phagocyte, attacks parasites and worms. Releases anti inflammatory chemicals
List the 2 types of agranulocytes and the function of each.
- Monocytes -
- -become macrophages
- -kidney shaped nucleus - Lymphocytes -
- -produce antibodies and provide immunity.
- -Attacks bacteria
- -develops into plasma cells which release antibodies
What ion within hemoglobin binds with oxygen?
Fe++
What is a normal RBC count for males and females?
Male 4.7 - 6.1
Female 4.2 - 5.4
How long do most RBC live?
approx 90-120 days
Define platelet adhesion and platelet aggregation
adhesion - initial sticking of platelets to wound site
aggregation - sticking pf platelets to already present platelets
What are the functions of blood?
- transport of nutrients
- waste transport
- pH regulation and body temp.
Name the components of blood
Plasma cells and formed elements
Buffy coat
what percent of whole blood is formed elements?
30-40%
what percent is plasma of whole blood and what does it contain mostly?
50-60%
mostly water
functions of albumin?
albumin is a carrier protein, a buffer, maintains osmotic pressure
function of globlins? what are immunoglobins?
globlins are transport proteins.
immunoglobins are antibodies -> they seek out antigens
What is TBG
hormone binding protein - type of globulin
what are apolipoproteins? Metalloproteins?
apolipoprotein - lipoproteins; LDL/HDL
metalloprotein- trans(fe)rrin
what is the function of fibrinogen?
clotting protein
Which organ synthesizes plasma proteins?
liver
what is serum?
plasma without clotting factors
hematocrit: what is it?
RBC count measurment
what are normal Hct levels for males & females?
male: 44-50%
female: 36-42%
what effect does Hct have on blood viscosity?
will change the thickness of blood. higher counts = think blood
lower counts = thin blood
how does EPO affect Hct?
EPO will be released during hypoxia and increases Hct
what 3 problems would decrease Hct?
- bleeding
- RBC production problem
- RBC premature lysing problem











