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Mechanoreceptors in human myotendinous junction
Author(s) -
Jozsa Laszlo,
Balint Jozsef,
Kannus Pekka,
Järvinen Markku,
Lehto Matti
Publication year - 1993
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.880160503
Subject(s) - anatomy , homogeneous , tendon , free nerve ending , neuromuscular junction , nerve fibre , sensory nerve , medicine , sensory system , biology , neuroscience , physics , thermodynamics
The sensory‐nerve‐ending system of 40 myotendinous junctions of human palmaris longus and plantaris muscles was studied histologically. All the known four types of nerve endings were identified. The Ruffini corpuscles could be found in equally small numbers (one to five) in both the muscular and tendineal sites of the junction. Also the free nerve endings were distributed equally on both sites. The Pacini corpuscles were frequent in the tendineal site (six to 14), but rare in the muscular site (one to three). The Golgi tendon organs were, in turn, frequent in the muscular site (nine to 12) but rare in the tendineal site (one to four), respectively. Within the muscle and tendon parts of the junction, the distance between two mechanoreceptors was always more than 250 m̈m and the receptor distribution was homogeneous. Further studies are needed to give functional explanation for these anatomic findings. © 1993 John Wiley & Soncs, Inc.