What is the initial color change of decomposing tissue?

• A. Red
• B. Yellow-green
• C. Brown
• D. Black

Answer: (B)

The initial color change of decomposing tissue is yellow-green. This shift in color typically occurs due to the breakdown of hemoglobin and the subsequent formation of sulfhemoglobin and other pigments as the tissue begins to decay.

In the early stages of decomposition, as bacteria break down blood and tissue components, a greenish tint can develop, particularly in areas where the skin is thin and blood has pooled, such as in the abdomen. This yellow-green coloration is often one of the first visible changes that indicate the process of decomposition is underway, which is crucial for professionals in mortuary science to recognize as it informs them about the timing and handling of the deceased.

Other options refer to later stages of decomposition. Red can be present during livor mortis but does not denote decomposition. Brown and black may occur as the decomposition progresses and tissues undergo further breakdown and decay, but the yellow-green hue signifies the initial phase of the decomposition process.