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AAMI EMBALMING CHEMISTRY WEEK #8 EXAM QUESTIONS WITH CORRECT ANSWERS
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AAMI EMBALMING CHEMISTRY WEEK #8 EXAM QUESTIONS WITH CORRECT ANSWERS
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AAMI EMBALMING CHEMISTRY WEEK#8 EXAM QUESTIONS WITH CORRECT
ANSWERS
INDEX - Answer-is the amount of formaldehyde gas (grams) dissolved in 100 ml. of
water
Strong / Hardening / Firming: - Answer-causes rapid tissue coagulation and fixation with
a definite degree of firmness
used for problem cases and more difficult to firm bodies
improper use may cause an excessive degree of dehydration . index of 26 - 36
Medium / Semi-hardening / Semi-firming: - Answer-produces moderate, slow-forming
flexible firmness with little dehydration
used for routine cases..
index of 16 - 25
Weak / Non-hardening / Non-firming - Answer-produces a minimum amount of firming
used for jaundice cases, children and infants
index of 5 - 15
PRESERVATIVES - Answer-They inactivate saprophytic bacteria and render the
medium upon which they thrive unsuitable for nutrition.
They arrest decomposition by altering the enzymes of the body by denaturing the
proteins of the body in such
a manner that the enzymes of decomposition cannot work.
aldehydes - Answer-all _____function by cross-linking proteins.
Formaldehydes - Answer-It rapidly destroys autolytic enzymes and acts on the body's
proteins making them insoluble
and thereby inhibiting tissue decomposition.
A small amount is needed to act on a large amount of protein.
It deodorizes the body amines formed during putrefaction.
Glyoxal - Answer-tends to stain tissue yellow limiting its use mainly to cavity fluid
formulations.
Gluteraldehyde - Answer-produces less firming than formaldehyde and has outstanding
disinfectant qualities.
It is capable of reacting with protein structures over a wide pH range.
It is less dehydrating than formaldehyde.
Is an excellent disinfectant that is known as a "cold chemical sterilant
, Methyl alcohol - (methanol, wood alcohol, CH3OH ) - Answer-will cross-link proteins as
well as being an
antipolymerizing agent for formaldehyde.
Isopropyl alcohol - (rubbing alcohol) - C3H7OH - - Answer-has the best germicidal
qualities of the three.Ethyl alcohol -Isopropyl alcoho-Methyl alcohol
Phenol - Answer-It is used only on anatomical specimens not in fluid because of the
putty gray appearance it produces
when mixed with formaldehyde. It was one of the most commonly found components of
embalming
fluid many years ago because it is very rapidly absorbed by protein structures.
QUATS - Answer-are not compatible with wetting agents and coloring material used in
arterial fluids so they
are restricted to DISINFECTING THE CAVITIES (nasal, oral) and SKIN.
QUATS - Answer-are used chiefly for their germicidal and deodorizing value.
QUATERNARY AMMONIUM COMPOUNDS or QUATS - Answer-They are commonly
found in cold sterilization formulations for instruments and other items; cleaning
agents for mold proofing remains; and deodorant sprays.
Examples include: Zephiran chloride, Roccal, Zepheral, Germitol and Benzalkonium
chloride
Gluteraldehyde - Answer-is known as a "cold chemical sterilant" that is good for use on
instruments, and in an
alkaline pH it is particularly effective.
Phenol - Answer-is used as a germicide; however its use is restricted to cavity fluids
Humectants - Answer-are agents which help to control tissue moisture balance.
They can be called a moisture retaining agent which delays dehydration.
They assist in making the embalmed tissue more flexible and rubbery.
Glycerol / glycerin: - Answer-An excellent solvent for disinfecting chemicals which
increases their germ-killing power.
A good lubricator, due to its hygroscopic nature if retained in the tissue it helps prevent
dehydration.
Sorbitol - Answer-loses water at a slower rate than glycerin therefore it is a more
efficient humectant than
glycerin, however it precipitates out of solution at very low temperatures.
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