Which corpuscle in the skin is specifically sensitive to light touch?

The Meissner corpuscle is the sensory receptor in the skin specifically sensitive to light touch. These specialized nerve endings are located in the upper dermis, particularly in areas such as the fingertips, palms, and soles of the feet, where sensitivity to light touch is crucial.

Meissner corpuscles respond to light mechanical stimuli, detecting changes in texture and slight pressure, making them key players in tactile sensitivity. They are rapidly adapting receptors, meaning they quickly respond to the onset of a stimulus and then diminish their response if the stimulus continues unchanging. This attribute allows for the perception of movement across the skin, which is vital for tasks requiring delicate manipulation and perception of fine details.

In contrast, other types of corpuscles serve different functions: Pacinian corpuscles are responsible for detecting deep pressure and vibration, Ruffini corpuscles monitor skin stretch and are involved in the perception of warmth, while Krause corpuscles are associated with the sensation of cold. Each of these corpuscles is essential for different sensory modalities, but when it comes to light touch specifically, the Meissner corpuscle is the correct and most relevant sensory structure.