What is a Ruffini end organ?

A Ruffini end organ, also known as a Ruffini corpuscle, is a type of mechanoreceptor found in the skin and joints. It is sensitive to sustained pressure and skin stretch, playing a key role in detecting changes in joint position and providing proprioceptive feedback. These receptors are slow-adapting, meaning they continue to respond over time to a stimulus, contributing to the perception of touch and pressure. Ruffini end organs are important for maintaining grip and providing a sense of body orientation.