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Clin Lab Proced.03

Homework Packet #3

QuestionAnswer
In the laboratory, _______________ is a program in which the total testing process is monitored to ensure quality. QA - Quality Assessment/Assurance
A chemical solution of a known concentration that can be used as a reference or calibration substance is a _______________. Standard
How close a determined value is to the _______________ value is expressed by the accuracy. True
A _______________ chart is the name of the quality control chart used to record daily quality control values. Levey-Jennings
The term that expresses the closeness of obtained values to each other is _______________. Precision
A _______________ is an abrupt change in one direction from the established mean. Shift
The _______________ is the sum of a set of values divided by the number of values. Average/Mean
The process of checking, standardizing, or adjusting a method or instrument so that it yields accurate results is called _______________. Calibration
The _______________ is a measure of the spread of population of values around the mean. SD - Standard Deviation
A _______________ is a liquid, solid, or gas dissolved in a liquid to make up a solution. Solute
Laboratory containers that are _______________ are used to make critical measurements. Volumetric
A liquid in which substances can be dissolved is a _______________. Solvent
A(n) _______________ flask is used to make noncritical measurements. Erlenmeyer
_______________ is a plastic that can be heat sterilized. Polypropylene
A wide-mouthed, straight-sided container with a pouring spout formed from the rim is called a _______________. Beaker
_______________ glass is an inexpensive type of glass with low resistance to heat and chemicals. Flint
A _______________ is a slender tube made of glass or plastic that is used in the laboratory for measuring and transferring liquids. Pipet
A pipet that holds or measures less than one mL (<1 mL) is called a _______________. Micropipet
A nonreactive glass with a high thermal resistance that is commonly used to make high quality labware is _______________. Borosilicate glass
A(n) _______________ is a device that uses pressurized steam for sterilization. Autoclave
Water that has had most of the mineral ions removed is _______________. Deionized water
The _______________ is the part of a centrifuge that holds the tubes and rotates during the operation of the centrifuge. Rotor
The name given to centrifuge models that can be used for serum separation or spinning urine samples is the _______________ centrifuge. Clinical
For maximum safety during centrifugation, tubes should remain capped to avoid the formation of _______________. Aerosols
Spores of the bacterium Bacillus Stearothermophilus contained on indicator strips is used to check the effectiveness of an _______________. Autoclave
For safety, an autoclave door must never be opened unless the chamber is at _______________ pressure. Zero (0)
A microscope having two oculars or eyepieces is _______________. Binocular
The magnifying lens closest to the objective being viewed with a microscope is the _______________. Objective
A microscope is said to be _______________ if it has objectives that can be interchanged without varying the instrument's focus. Parfocal
The _______________ is the platform on the microscope that holds the object to be viewed. Stage
The apparatus located below the microscope stage that directs light into the objective is the _______________. Condenser
The _______________ is the distance between the microscope objectives and the microscope slide when the object is in sharp focus. Working distance
The revolving unit called the _______________ is the unit on the microscope to which the objectives are attached. Nosepiece
Kohler illumination adjustments are performed using the _______________ on the microscope. Field Diaphragm
The special nonabrasive paper that is used to clean microscope objectives is called _______________. Lens paper
CONTROL(S) Solutions usually made from human serum and with a known concentration of the same constituents as those being measured in the patient sample.
BINOCULAR Having two oculars or eyepieces.
DEIONIZED WATER Water that has had most of the mineral ions removed.
CRITICAL MEASUREMENTS Measurements made when the accuracy of the concentration of a solution is important.
SOLVENT A dissolving agent, usually a liquid.
PARFOCAL Having objectives that can be interchanged without varying the instrument's focus.
DISTILLED WATER The condensate collected from steam after water has been boiled.
MENISCUS The curved upper surface of a liquid in a container.
NONCRITICAL MEASUREMENTS Estimated measurements, measurements made in containers that estimate volume.
EYEPIECE The ocular of a microscope.
ROTOR The part of a centrifuge that holds the tubes and rotates during the operation of the centrifuge.
REAGENT Substance or solution used in laboratory analyses; substance involved in chemical reaction.
ELECTRON MICROSCOPE A microscope that uses an electron beam to create images from a specimen and that is capable of much greater magnification than a light microscope.
pH A measurement of the hydrogen ion concentration expressing the degree of acidity or alkalinity of a solution.
QC - QUALITY CONTROL A system that verifies the reliability of analytical test results through the use of standards, controls, and statistical analysis.
FINE ADJUSTMENT Control that adjusts position of microscope objectives and is used to sharpen focus.
SOLUTE The substance dissolved in a given solution.
MONOCULAR Having one ocular or eyepiece.
TREND An indication of error in the analysis, detected by increasing or decreasing values in the control sample.
OBJECTIVE Magnifying lens closest to the object being viewed with a microscope.
NOSEPIECE Revolving unit to which the microscope objectives are attached.
COARSE ADJUSTMENT Control that adjusts position of microscope objectives and is used to initially bring objects into focus.
MICROFUGE A centrifuge that spins small tubes at high rates of speed.
WESTGARD'S RULES A set of rules used to determine when a method is out of control.
Created by: luparl
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