What type of membrane is responsible for reducing friction between organs?

The serous membrane plays a key role in reducing friction between organs, particularly those within the body cavities. It consists of two layers: the visceral layer that directly covers the organs and the parietal layer that lines the cavity wall. Between these two layers is a potential space filled with serous fluid. This fluid acts as a lubricant, allowing organs such as the heart, lungs, and abdominal organs to move smoothly against each other during normal physiological movements, such as respiration and digestion.

In contrast, other types of membranes serve different functions. Mucous membranes line various cavities and passages of the body that connect to the outside, producing mucus for lubrication and protection but not primarily focusing on friction reduction between internal organs. Skeletal membranes are not recognized as a specific type of membrane in this context and do not have a relevant role in organ interaction. Cutaneous membranes, or skin, serve as a protective barrier for the body but are not involved in the reduction of friction among internal organs. This makes the serous membrane the correct answer for the question regarding friction reduction.