What type of tissue serves as a slippery covering over surfaces that move against each other?

Cartilage is a specialized connective tissue that serves as a slippery covering over surfaces that move against each other, particularly in joints. This unique property allows cartilage to reduce friction and absorb shock during movements, such as walking or running.

In joints, cartilage coats the ends of bones, facilitating smooth gliding motions and preventing the bones from rubbing directly against each other, which could lead to wear and tear or pain. This is particularly vital in load-bearing joints such as the knees, hips, and shoulders.

Other types of tissues listed have different functions: bone provides structure and support, muscle is responsible for movement, and nerve tissue transmits signals throughout the body. These distinctions further underscore the specific functional role of cartilage in the context of surfaces that move against each other.