Thanatochemistry- Action And Composition Of Embalm
Thanatochemistry- Action and Composition of Embalm
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Thanatochemistry- Action and Composition of Embalming Fluids Chapter 24 Exam Bank Solution Manual Already Passed
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Thanatochemistry- Action and Composition of Embalm
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Thanatochemistry- Action And Composition Of Embalm
Thanatochemistry- Action and Composition of Embalming Fluids Chapter 24 Exam Bank Solution Manual Already Passed
What are the four major types of preservatives used in embalming fluids? - Answers aldehydes, alcohols, phenols, formaldehyde donor compounds
What are the five actions of preservative...
Thanatochemistry- Action and Composition of Embalming Fluids Chapter 24 Exam Bank Solution
Manual Already Passed
What are the four major types of preservatives used in embalming fluids? - Answers aldehydes, alcohols,
phenols, formaldehyde donor compounds
What are the five actions of preservative chemicals? - Answers 1. Inactivates the active chemical groups
of proteins or amino acids.
2. Inhibiting further decomp.
3. Inactivate enzymes.
4. Kills microorganisms
5. Destroys odors and eliminates further production.
Reactions of Formaldehyde: WATER - Answers o Forms methalyne glycol
o 37% HCHO gas by weight, 40% by volume = formalin
Reactions of Formaldehyde: METHANOL - Answers Acts as an antipolymerizing agent.
Reactions of Formaldehyde: AMINO ACIDS - Answers Noncoagulability of amino acids.
Reaction of Formaldehyde: PROTEINS - Answers o Denaturing protiens by cross-linking peptide bonds
o Cross-linking of protein removes a molecule of water for every cross-linked formed.
What are the gross changes in proteins brought about by formaldehyde and other coagulating agents? -
Answers o The viscosity is increased
o The resistance to deformation by external forces in increased, that is, material becomes harder
o The resistance to digestion by enzymes in increased
o The water sensitivity (hydrolysis) and water solubility are decreased
What is the formaldehyde demand? - Answers The total amount of formaldehyde which protein will
combine to be completely preserved.
What is distribution? - Answers The movement of fluid from the point of injection to the tissues.
What is diffusion? - Answers The movement of fluid into the tissues.
What is the Walling-Off action of formaldehyde? - Answers If the embalming solution is too
concentrated, the capillaries in the tissues will be seared and sealed by the formaldehyde, thus
effectively inhibiting diffusion of the fluid into the tissues by walling off the unexposed areas.
, What is the indirect action on fats? - Answers Adipose tissue contains very little nitrogen so it actually
involves the preservation of the matrix in which the fat is embedded rather than the preservation of the
fat itself.
What are the four basic types of embalming fluids? - Answers 1. Arterial Fluids
2. Cavity Fluids
3. Accessory Fluids
4. Autopsy Chemicals
Preservatives - Answers o Aldehydes
o Alcohols
o Phenolic Compounds
o Formaldehyde donor compounds
Name some ALDEHYDES - Answers o Formaldehyde
o Glutaraldehyde
Name some ALCOHOLS - Answers o Methanol
o Ethanol
Why is methanol used more than ethanol? - Answers Because of its dual ability to act as a preservative
and it functions as an antipolymerizing agent.
Which alcohols function as germicides? - Answers o Ethanol
o Isopropyl Alcohol - used more frequently because of low cost
What compunds are are excellent surface supplementary germicides used for disinfection of skin, oral,
and nasal cavities? - Answers Quaternary ammonium.
What is considered a cold chemical sterilant? - Answers Glutaraldehyde
What type of agents control the rate of reation of the preservatives and disinfectants with the tissues? -
Answers Modifying Agents
Name some modifying agents. - Answers o Humectants
o Buffers
What are humectants? - Answers A moisture-retaining agent.
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