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Related Concept Videos

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Mechanically-gated Ion Channels

Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Related Experiment Video

Updated: Jul 27, 2026

A Probing Device for Quantitatively Measuring the Mechanical Properties of Soft Tissues during Arthroscopy
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Published on: May 1, 2020

Mechanoreceptors in articular tissues.

M L Zimny1

  • 1Department of Anatomy, Louisiana State University Medical Center, New Orleans 70112-1393.

The American Journal of Anatomy
|May 1, 1988
PubMed
Summary

Joints contain mechanoreceptors in capsules, ligaments, and menisci, acting as a first defense against extreme movements. These receptors alert the central nervous system to prevent joint injury through reflex mechanisms.

Area of Science:

  • Neuroscience
  • Biomechanics
  • Anatomy

Background:

  • Mechanoreceptors are crucial for sensing joint position and movement.
  • Understanding their distribution is key to joint proprioception and injury prevention.

Purpose of the Study:

  • To review the morphology, distribution, and function of mechanoreceptors in various joint structures.
  • To elucidate the role of mechanoreceptors in sensing extreme joint movements and preventing injury.

Main Methods:

  • Literature review of studies on mechanoreceptors in animal and human joints.
  • Analysis of receptor types (Ruffini-like, Golgi tendon organ, Pacinian-like) and their locations.

Main Results:

  • Mechanoreceptors are present in joint capsules, ligaments, menisci, and temporomandibular articular disks.

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  • Receptor density is highest at the periphery of articular disks and in the horns of menisci.
  • Concentration of mechanoreceptors is greater in areas related to extreme movement.

    • Conclusions:

    • Intra-articular structures contain mechanoreceptors, with higher concentrations in areas sensing extreme motion.
    • These receptors initiate protective reflex mechanisms by alerting the central nervous system to potential injury.
    • Mechanoreceptors play a vital role in joint stability and injury prevention through afferent signaling.