CH 2 Flashcards
The ultimate goal of a quality assurance program is to
ensure the validity of laboratory results
obtained.
Which of the following is a preanalytical component
of a quality assurance program?
turn around time
Which of the following is a postanalytical component of a quality assurance program?
critical values
Analytical components of a quality assurance
program are procedures and policies that affect the
technical testing of the specimen
The purpose of quality control materials is to
assess the accuracy and precision of a method.
Why are written procedure manuals necessary?
To ensure that all individuals perform the same task consistently
Which of the following sources should include a protocol for the way to proceed when quality control
results exceed acceptable tolerance limits?
procedure manual
Technical competence is displayed when a laboratory practitioner
recognizes discrepant test results.
Quality control materials should have
a matrix similar to patient samples.
Within one facility, what is the purpose of perform- ing duplicate testing of a specimen by two different laboratories (i.e., in-house duplicates)?
It can detect procedural and technical differences
between laboratories.
Interlaboratory comparison testing as with proficiency surveys provides a means to
evaluate the performance of a laboratory compared with that of other laboratories.
mode of transmission? smoking in the lab
ingestion
Which of the following is not part of a Chemical Hygiene Plan?
To monitor the handling of biological hazards
Which of the following information is not found on a material safety data sheet?
catalog number
fluid that carries transported molecules and cells
blood
a pump to move the fluids
heart
vessels to carry fluid between the pump and body tissues
blood vessels
cells that are separated by a matrix
connective tissue
what is blood’s matrix
plasma
the % of blood volume occupies by cells
hematocrit
an aqueous medium for transport of inorganic ions, gases, and organic solutes
plasma
what is plasma mostly made up of
90% water
what are the most common plasma proteins
albumin 55%
fibrinogen 4%
where does hemoglobin release o2
tissue level
true or false: blood does not have nuclei or organelles
true
function of the spleen
removes old RBCs
stores healthy RBC
what generates new RBCs
hemopoietic tissues
what controls erythropoiesis
kidneys
what stimulates erythropoiesis
erythropoietin
process of erythropoietin secretion
kidneys detect reduced o2
erythropoietin goes into the blood
erythropoietin stimulates erythropoiesis in bone marrow
more RBCs are released in blood
what kind of cell are platelets
cell fragments
where do platelets come from
shed from megakaryocytes in bone marrow
what parts of the heart are involved in pulmonary circulation
right atrium
right ventricle
what parts of the heart are involved in systemic circulation
left ventricle
left atrium
blood circulation
all blood from superior and inferior vena cava -> right atrium -> tricuspid valve -> right ventricle -> pulmonary valve -> pulmonary trunk -> pulmonary artery -> lungs -> left atrium -> bicuspid valve -> left ventricle -> aorta
where does the right side of the heart send blood
lungs
where does the left side of the heart send blood
all over body
what carries blood away from the heart
arteries
why does blood move fast in the arteries
large radii = little resistance
true or false: arteries are not elastic
false
arterosclerosis
heartening of the arteries
describe the vessels of a person with high blood pressure
constricted
what allows arteries to expand
elastin fibers
when does systolic blood pressure occur
ventricals contract
which number is systolic blood pressure on a reading
top
which number is diastolic blood pressure on a reading
bottom
when does diastolic blood pressure occur
ventricles relax
what is the main driving force of blood flow
mean arterial pressure
formula of mean arterial pressure
= diastolic pressure+ (1/3(systolic pressure - diastolic pressure))
what controls vessels contracting and relaxing
autonomic nervous system
condition where fluid stay in interstitial space
edema
hydrostatic pressure
pushes nutrients out
what happens to blood pressure during hydrostatic pressure
increases
what size molecules does hydrostatic pressure deal with
small
what size molecules does oncotic pressure deal with
large
