BMS Embalming and Mortuary Chemistry 2

Question 1

Which chemical reaction is primarily responsible for the cross-linking of proteins during formaldehyde embalming?

Accepted Answer

Methylol bridge formation between amino groups

Answer

Formaldehyde reacts with free amino groups on proteins to form methylol intermediates that bridge adjacent protein chains, creating cross-links that firm tissue.

Question 2

A body with a blood pH of 5.8 due to acidosis will require what embalming fluid adjustment?

Accepted Answer

Increased buffer content in arterial fluid

Answer

Acidotic tissues consume aldehyde rapidly and resist preservation, so buffered arterial fluid helps neutralize acid and stabilizes fixation chemistry.

Question 3

What is the primary purpose of using a co-injection fluid alongside arterial embalming solution?

Accepted Answer

To condition the vascular system and improve fluid distribution

Answer

Co-injection fluids contain surfactants, anticoagulants, and conditioners that open capillaries and improve even distribution of the primary arterial solution.

Question 4

Cavity embalming fluid typically contains a much higher index of formaldehyde than arterial fluid. What is the typical range for cavity fluid index?

Accepted Answer

35–50 index

Answer

Cavity fluids generally range from 25–50 index because they must penetrate and fix organ masses that are not reached by the vascular system.

Question 5

Which embalming complication arises when excessive amounts of humectant cause tissues to remain too moist and soft after embalming?

Accepted Answer

Waterlogging

Answer

Waterlogging occurs when hygroscopic humectants draw and retain too much moisture, leaving tissues swollen, soft, and poorly preserved.

BMS - Bachelor of Mortuary Science Practice Test

BMS - Bachelor of Mortuary Science Practice Test

BMS Embalming and Mortuary Chemistry 2