Homework Packet #3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| In the laboratory, _______________ is a program in which the total testing process is monitored to ensure quality. | QA - Quality Assessment/Assurance
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| A chemical solution of a known concentration that can be used as a reference or calibration substance is a _______________. | Standard
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| How close a determined value is to the _______________ value is expressed by the accuracy. | True
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| A _______________ chart is the name of the quality control chart used to record daily quality control values. | Levey-Jennings
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| The term that expresses the closeness of obtained values to each other is _______________. | Precision
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| A _______________ is an abrupt change in one direction from the established mean. | Shift
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| The _______________ is the sum of a set of values divided by the number of values. | Average/Mean
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| The process of checking, standardizing, or adjusting a method or instrument so that it yields accurate results is called _______________. | Calibration
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| The _______________ is a measure of the spread of population of values around the mean. | SD - Standard Deviation
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| A _______________ is a liquid, solid, or gas dissolved in a liquid to make up a solution. | Solute
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| Laboratory containers that are _______________ are used to make critical measurements. | Volumetric
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| A liquid in which substances can be dissolved is a _______________. | Solvent
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| A(n) _______________ flask is used to make noncritical measurements. | Erlenmeyer
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| _______________ is a plastic that can be heat sterilized. | Polypropylene
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| A wide-mouthed, straight-sided container with a pouring spout formed from the rim is called a _______________. | Beaker
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| _______________ glass is an inexpensive type of glass with low resistance to heat and chemicals. | Flint
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| A _______________ is a slender tube made of glass or plastic that is used in the laboratory for measuring and transferring liquids. | Pipet
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| A pipet that holds or measures less than one mL (<1 mL) is called a _______________. | Micropipet
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| A nonreactive glass with a high thermal resistance that is commonly used to make high quality labware is _______________. | Borosilicate glass
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| A(n) _______________ is a device that uses pressurized steam for sterilization. | Autoclave
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| Water that has had most of the mineral ions removed is _______________. | Deionized water
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| The _______________ is the part of a centrifuge that holds the tubes and rotates during the operation of the centrifuge. | Rotor
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| The name given to centrifuge models that can be used for serum separation or spinning urine samples is the _______________ centrifuge. | Clinical
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| For maximum safety during centrifugation, tubes should remain capped to avoid the formation of _______________. | Aerosols
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| Spores of the bacterium Bacillus Stearothermophilus contained on indicator strips is used to check the effectiveness of an _______________. | Autoclave
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| For safety, an autoclave door must never be opened unless the chamber is at _______________ pressure. | Zero (0)
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| A microscope having two oculars or eyepieces is _______________. | Binocular
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| The magnifying lens closest to the objective being viewed with a microscope is the _______________. | Objective
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| A microscope is said to be _______________ if it has objectives that can be interchanged without varying the instrument's focus. | Parfocal
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| The _______________ is the platform on the microscope that holds the object to be viewed. | Stage
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| The apparatus located below the microscope stage that directs light into the objective is the _______________. | Condenser
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| The _______________ is the distance between the microscope objectives and the microscope slide when the object is in sharp focus. | Working distance
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| The revolving unit called the _______________ is the unit on the microscope to which the objectives are attached. | Nosepiece
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| Kohler illumination adjustments are performed using the _______________ on the microscope. | Field Diaphragm
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| The special nonabrasive paper that is used to clean microscope objectives is called _______________. | Lens paper
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| 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.
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| BINOCULAR | Having two oculars or eyepieces.
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| DEIONIZED WATER | Water that has had most of the mineral ions removed.
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| CRITICAL MEASUREMENTS | Measurements made when the accuracy of the concentration of a solution is important.
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| SOLVENT | A dissolving agent, usually a liquid.
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| PARFOCAL | Having objectives that can be interchanged without varying the instrument's focus.
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| DISTILLED WATER | The condensate collected from steam after water has been boiled.
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| MENISCUS | The curved upper surface of a liquid in a container.
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| NONCRITICAL MEASUREMENTS | Estimated measurements, measurements made in containers that estimate volume.
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| EYEPIECE | The ocular of a microscope.
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| ROTOR | The part of a centrifuge that holds the tubes and rotates during the operation of the centrifuge.
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| REAGENT | Substance or solution used in laboratory analyses; substance involved in chemical reaction.
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| 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.
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| pH | A measurement of the hydrogen ion concentration expressing the degree of acidity or alkalinity of a solution.
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| QC - QUALITY CONTROL | A system that verifies the reliability of analytical test results through the use of standards, controls, and statistical analysis.
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| FINE ADJUSTMENT | Control that adjusts position of microscope objectives and is used to sharpen focus.
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| SOLUTE | The substance dissolved in a given solution.
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| MONOCULAR | Having one ocular or eyepiece.
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| TREND | An indication of error in the analysis, detected by increasing or decreasing values in the control sample.
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| OBJECTIVE | Magnifying lens closest to the object being viewed with a microscope.
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| NOSEPIECE | Revolving unit to which the microscope objectives are attached.
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| COARSE ADJUSTMENT | Control that adjusts position of microscope objectives and is used to initially bring objects into focus.
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| MICROFUGE | A centrifuge that spins small tubes at high rates of speed.
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| WESTGARD'S RULES | A set of rules used to determine when a method is out of control.
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Created by:
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