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What do Pacinian corpuscles detect?

  1. Temperature

  2. Deep pressure and pain

  3. Light touch

  4. Vibrations

The correct answer is: Deep pressure and pain

Pacinian corpuscles are special nerve endings located in the skin, joints, and internal organs. These encapsulated receptors are sensitive to mechanical changes in their surroundings, particularly deep pressure and vibrations. This allows us to detect touch and pressure, but they do not detect temperature or light touch. Therefore, option A, C, and D are incorrect.