Medicine & USMLE

Ruffini Endings

  1. Pacinian Corpuscle
  2. Meissner Corpuscle
  3. Ruffini Endings
  4. Merkel Disk

Ruffini Endings, also called Ruffini Corpuscles or Bulbous Corpuscles, are one of the four mechanoreceptors or sensory receptors found in the skin. They are primarily located in the reticular dermis of fingertips and joints.

The structure of Ruffini endings consists of dendritic fiber endings branching into an capsule. Due to their location, these receptors are primarily responsible for sensing pressure, slippage of objects along the surface of the skin, as well as joint angle changes in proprioception.

Since these receptors adapt slowly, they can detect a non-moving (static) or sustained stimulus.

Find this Ruffini Endings mnemonic and other Sensory Receptor mnemonics among Pixorize's visual mnemonics for the USMLE Step 1 and NBME Shelf Exams.