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Comparisons in structure of tendon organs in the rat, cat and man
- Source :
- The Journal of comparative neurology. 138(3)
- Publication Year :
- 1970
-
Abstract
- Golgi tendon organs from human, cat and rat extensor digitorum brevis muscles are compared in structural design. Microscopic studies reveal that these receptors appear to be very similar in structure, suggesting close functional similarities even though they are largest in man, intermediate size in cats and smallest in rats. This contrasts with similar observations on the structure of muscle spindles which show strong differences in respect to the insertion of intrafusal muscle fibers thereby implying species specialization of response characteristics to intramuscular tensions and pressures. Reconstructive drawings of human tendon organs from serial sections suggest how sensory endings may be affected by tensions at the musculotendinous junctions due to stretch or contraction of motor units. Finely divided collagen bundles appear to compress and distort nerve endings lying between them, thus inducing the generation of spike discharges.
- Subjects :
- Extensor digitorum brevis
Contraction (grammar)
CATS
General Neuroscience
Muscles
Response characteristics
Sensory system
Anatomy
Golgi apparatus
Biology
Tendon
Rats
Organoids
Tendons
symbols.namesake
Anatomy, Comparative
medicine.anatomical_structure
symbols
medicine
Cats
Animals
Humans
Collagen
Free nerve ending
Subjects
Details
- ISSN :
- 00219967
- Volume :
- 138
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- The Journal of comparative neurology
- Accession number :
- edsair.doi.dedup.....044d79a1debaa184f683a79634150855