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Ruffini corpuscle
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Bulbar corpuscles, also known as Ruffini corpuscles or Ruffini endings, are mechanoreceptors found in the reticular dermis and hypodermis of both glabrous and hairy skin, as well as in ligaments. They are slowly adapting mechanoreceptors which respond to stretch and movement and do not transmit discriminative touch stimuli.
Structurally, a bulbar corpuscle is spindle-shaped and includes a single branching sensory fiber surrounded by a thin capsule containing longitudinally oriented collagen fibers. Tension applied at the ends of the capsule compresses the nerve fiber branches inside, with the resulting nerve impulses being perceived as stretching.
| Terminology |
English: Ruffini corpuscle Latin: Corpusculum sensorium fusiforme Synonyms: Bulbous corpuscle, Ruffini ending |
| Definition | Slowly adapting mechanoreceptor |
| Location | Dermis and hypodermis of both hairy and glabrous skin |
| Function | Respond to stretch and movement stimuli |
Learn more about peripheral mechanoreceptors with this study unit (and article):
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