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WorksheetsHTL 4241 Lab Ops Final Review - Fall 2024
Total questions: 20
Worksheet time: 10mins
How long should you flush your eye after its been exposed to a chemical?
5 minutes
15 minutes
20 minutes
1 hour
Which of the following will decalcify the quickest?
weak acid
strong acid
EDTA
The processor is on FIRE! The best way to put it out is to:
pour some water on panel
put a fire blanket over the processor
unplug the unit from the outlet
use a dry chemical fire extinguisher
Which of the following is not a suitable fixative for PAP stained cytology specimens?
95% ethanol
100% methanol
Bouins
CytoLyt
What should we do to evacuate at fire?
NFPA
RACE
PASS
RUN
Which of the following decal methods rejuvenates itself?
EDTA
ion-exchange
electrolytic
weak acid
What should you not do for a PAP stain?
air dry
use an aqueous fixative
use a non-aqueous fixative
All of the following are acceptable methods to reduce hazardous chemical waste in a laboratory EXCEPT:
diluting with water
neutralization
recycling
substitution
What is the ideal thickness for grossing bone?
2-3mm
2-4mm
3-5mm
4-6mm
What type of hazard does the blue portion of the NFPA diamond represent?
fire
instability
health
safety
Which of the following inactivates infectious prions?
formalin fixation
10% household bleach
30 minutes of autoclaving at 140 C
all of the above
none of the above
Cleaning up a liquid chemical spill in the laboratory primarily exposes the responder to what type of hazard?
acute
chronic
cutaneous
mutagenic
During decalcification, which of the following gases is released?
ammonia
carbon dioxide
nitrous oxide
oxygen
A carcinogen is released when formaldehyde is mixed with which of the following acids?
acetic
formic
hydrochloric
nitric
To avoid cross-contamination, non-GYN specimens should be stained separately from GYN specimens. Specimens most likely to cross contaminate are:
abdominal + pleural fluid
csf
fna
urines
What is the PEL for formaldehyde/formalin?
7.5 ppm
.75 ppm
4.5 ppm
2.5 ppm
What is the best smear method for pleural fluid?
nickel
crush
pull apart
touch
What is the most preferred reagent for decalcification?
weak acid
strong acid
chelator
other
Which of Kaleena's cats is this?
Knives
Barbie
Pounce
Peach
What is wrong with this image?
too thick
over decal
over differentiated
under decal
