What is a distinguishing feature of cavity fluid when compared to arterial fluid?

A distinguishing feature of cavity fluid in comparison to arterial fluid is that cavity fluid contains no active dyes. Active dyes are typically included in arterial fluids to help in the preservation and presentation of the body, enhancing the visual aspects of the tissues. Cavity fluid, on the other hand, is used primarily for the treatment of bodily cavities and does not require the same visual enhancement, thus it does not include these dyes.

Preservatives are generally present in both types of fluid to maintain tissue integrity; therefore, the presence of preservatives is not a distinguishing feature. Viscosity can vary, but it is not a defining characteristic differentiating the two fluids as both can have different viscosities based on their formulation. Moreover, opacity can depend on the specific formulation and concentration of the ingredients used in either type of fluid but is not a reliable distinguishing feature.