Summary
Normal muscle spindles of human skeletal muscle were studied histochemically. 1) Four histochemical types of intrafusal muscle fibers were classified by ATPase stain: Bag I fiber, Bag II fiber, Chain I fiber and Chain II fiber. Moreover, two types of nuclear bag fibers were classified by NADH Tetrazolium Reductase stain and PAS stain: Bag I fiber and Bag II fiber. 2) Three kinds of fusimotor endings were verified by the cholinesterase technic: en plaque, en grappe and diffuse endings. 3) Two kinds of fusisensory endings were verified by NADH TR stain and also electron-microscopically: primary and secondary sensory endings.
Zusammenfassung
Es wurden normale Skeletmuskelspindeln von Menschen histochemisch untersucht. 1. Histochemisch wurden vier Muskelfasertypen der intrafusalen Fasern — Bag I fiber, Bag II fiber, Chain I fiber und Chain II fiber — von ATPase-Aktivität klassifiziert. Bei der NADH-Tetrazolium-Reduktase wurden zwei Muskelfasertypen an intrafusalen Fasern — Bag I fiber und Bag II fiber — beobachtet. 2. Drei Typen der motorischen Endplatte — en plaque Endplatte, en grappe Endplatte und diffuse Endplatte — wurden an Muskelspindeln von Cholinesterase klassifiziert. 3. Zwei Typen der sensorischen Nervenenden — primär-sensorisches Nervenende und sekundärsensorisches Nervenende — wurden an Muskelspindeln mit NADH-Tetrazolium-Reduktase und elektronmiktroskopisch beobachtet.
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Saito, M., Tomonaga, M., Hirayama, K. et al. Histochemical study of normal human muscle spindle. J. Neurol. 216, 79–89 (1977). https://doi.org/10.1007/BF00312942
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DOI: https://doi.org/10.1007/BF00312942