Chpt 5 Metric System

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Gram is used to measure . . .: weight
Liter is used to measure . . .: volume
Meter is used to measure . . .: length
Doses are calculated using metric measurements that relate to . . .: weight and volume
Of the three things above, what isn't used to calculate doses?: Meter isn't used to calculate doses
International System of Units is sometimes abbreviated . . .: SI

an abbreviation for the French System International d'Unites
why do we use the metric system and not the Apothecary system?: metric is more precise

Ex babies are weighed in grams & kilograms, and adults in kilograms, not lbs. & oz.s
what is used to measure someone's height?: linear measurements in meter & centimeters
Kilo: 1,000 one thousand times
Centi: 0.01 one hundreths part
Milli: 0.001 one thousanths part of
Micro: 0.000001 one millionith part of
Hecto: 100 one hundred times
Deka: 10 ten times
Deci: o.1 one tenth
mcg means ?: microgram or µg

BUT don't use µg b/c it looks like mg and can cause lots of trouble, see why?
is it ml or mL ?: mL

the L is capitalized on purpose
gram will be used as gm or Gm what are we talking about?: Use standard SI notation

Ex

gram g
microgram mcg
milligram mg
kilogram kg
liter L
milliliter mL
we don't use quanities with a fraction . . .: use: 0.4g or 0/5L

NOT 2/5 g or 1/2 L
write the abbrevations where?: after the quanity

Ex 1,000 mg NOT mg 1,000
weight is in grams 1,000 mg = ?: 1 g
Volume uses the what abbreviation?: L for Liter

1,000 mL = 1 L

1mL = 0.001 L
cubic centimeter is how much space?: the space 1mL of liquid occupies

abbreviated as cc

mL and cc are used interchangibly

BUT mL is used for volume, not cc! **************************

See, a cup will show mL on its side, not cc's.
Got to memorize this: 1 kilogram kg = 1,000 g 1 gram g = 1,000 milligrams mg 1 milligram mg = 1,0000 what???: mcg
Got to memorize this: 1 Liter = 1,000 milliliters theres the deal with pints and quarts being almost the same as metric. what about this?: the thing is pints & quarts aren't used around hospital areas BUT you'll run into it in a home enviroment so you have to know it for that
so 1 pint â‰ˆ 500 mL 1 quart â‰ˆ 1,000 mL whats wrong here?: not exact, both Apothocary units are less than the metric
Conversions b/t Metric Units Now Rule 1 to convert a smaller unit to a larger one, ...?: divide by moving the decimal point 3 places to the left

Ex 100mL = 0.1L
another example of converting a smaller unit to a larger one ... Ex 50mg = ...?: 50 mg = 0.05g

Placing the zero in front of the decimal is a BIG DEAL
To convert a larger number to a smaller one, what?: multiply by moving the decimal 3 places to the right

Ex 0.75g = 750mg
Ex 0.04kg = 40g

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