Deck 6: Laboratory Equipment

Question 1

A beaker is used to:

A)Transfer fluid from one container to another
B)Insert a specimen into a hemoglobin testing instrument
C)Read a hematocrit result
D)Contain fluid and potentially measure the level of fluid

Answer 1

D
A beaker is used as a container for fluid, and many are marked with increments for measurement of the fluid.

Question 2

An opening or hole where a controlled amount of substance, light, or liquid is admitted is a(n):

A)Cylinder
B)Aperture
C)Condenser
D)Ocular lens

Answer 2

B
The term aperture is used in many situations to refer to an opening or hole.

Question 3

Which of these tests is/are commonly performed on an automated urine analyzer instrument?

A)Ketones
B)Mucus
C)Protein
D)A and C
E)None of the above

Answer 3

D
Mucus is a formed element in the urine specimen, not something that can be quantitatively reported in an instrument. Ketones and protein are dissolved chemicals in the urine.

Question 4

A tachometer is used to maintain a:

A)Spectrophotometer
B)Electron microscope
C)Dissecting microscope
D)Centrifuge

Question 5

Automated urinalysis instruments may be used with all urine specimens for chemical analysis.

Question 6

Which of these is not part of a compound microscope?

A)Chamber
B)Fine focus knob
C)Coarse focus knob
D)Stage

Question 7

Rotations per minute (RPMs) are measured as part of the maintenance procedures for:

A)Laboratory refrigerators
B)Urine analysis
C)Centrifuges
D)Microscopes

Question 8

An incubator is often used in the laboratory to assist with:

A)Specimen storage after testing
B)Urine storage before testing
C)Growth of microbiology specimens
D)Coagulation studies

Question 9

A laboratory thermometer is often used to:

A)Maintain a centrifuge
B)Monitor the temperature of the refrigerator where reagents are stored
C)Maintain a compound microscope
D)Verify the temperature of a CBC testing instrument each shift

Question 10

Why is it important to keep a microscope covered when it is not being used?

A)So the microscope does not become overheated
B)To protect the microscope and lenses from dust buildup
C)To keep the adjustment knobs from moving
D)To keep the arm stable

Question 11

Which of these instruments may be used to measure hemoglobin levels?

A)HemoCue
B)iStat chemistry analyzer
C)Cholestech LDX
D)None of the above

Question 12

How are INR and Protime results different from one another?

A)The INR and Protime results are the same for any given specimen.
B)The INR is a calculation that standardizes the results by taking into consideration the lot number of the reagents and the type of instrument used.
C)The Protime is always lower than the INR.
D)The Protime is always two times the INR.

Question 13

A balanced centrifuge has:

A)Tubes of various sizes and volume placed throughout the tube holders
B)Tubes of the same size and volume placed across from one another in the tube holders
C)One tube at a time in the tube holder
D)Tubes of various sizes but same volume across from one another in the tube holders

Question 14

An instrument used to measure light intensity is a(n):

A)Spectrophotometer
B)Tachometer
C)Diaphragm
D)Iris

Question 15

The fine adjustment knob is used primarily with the lowest power objective on the compound microscope.

Question 16

The lenses closest to the eyepiece in a compound microscope are the:

A)Ocular lenses
B)Objective lenses
C)Aperture lenses
D)Cuvette lenses

Question 17

Liquid in a cylinder must be measured by documenting the level of the:

A)Stage
B)Iris diaphragm
C)Tachometer
D)Meniscus

Question 18

Lysed red blood cells are broken open to release their contents.

Question 19

A patient is diagnosed with anemia when his or her hemoglobin level falls below the normal range.

Question 20

Which of these instruments will include an "arm"?

A)Hematocrit centrifuge
B)Benchtop centrifuge
C)Compound microscope
D)HemoCue hemoglobinometer

Question 21

After a medical assistant puts specimens in a benchtop centrifuge, closes and locks the lid, and turns on the power to start the rotation of the specimens, the centrifuge starts to vibrate and makes a loud noise. What is the most likely reason for the vibration and noise?

Question 22

Is a reagent strip for a urinalysis or chemistry instrument generally used more than once?

Question 23

Oil is used with each lens when focusing the specimen under the microscope.Short Answer

Question 24

What effect does centrifugal force have on a specimen when it is centrifuged?

Question 25

Are all centrifuges designed to be used on a benchtop?