Which set of corpuscles is associated with vibration and movement and includes deep pressure sensing?

• A. Pacinian corpuscles
• B. Merkel Cells
• C. Ruffini and Pacinian Corpuscles
• D. Krause End Bulbs

Answer: (C)

Mechanoreceptors in the skin respond to different kinds of touch, and their roles depend on where they are and what they’re tuned to detect. Pacinian corpuscles sit deep in the dermis and are specialized for rapid changes—high-frequency vibration and deep pressure. Ruffini endings lie in the dermis as well and respond to sustained skin stretch and deformation, contributing to the sense of movement and the position of the skin. When a set is described as associated with vibration and movement and includes deep pressure sensing, pairing Pacinian corpuscles with Ruffini endings makes sense: Pacinian handles vibration and deep pressure, while Ruffini endings handle movement and stretching. Merkel cells are involved in fine touch and texture at a superficial level, and Krause end bulbs are linked to cold sensation in mucous membranes, not to vibration or movement. So the combination that fits all aspects is Ruffini and Pacinian corpuscles.