The innervation pattern of fast myotomal muscle in the teleostMyoxocephalus scorpius: A reappraisal.
The pattern of polyneuronal innervation in the sculpinMyoxocephalus scorpius was examined. The majority of fast fibres in sculpin are innervated by both adjacent nerves, and <15% receive input from sub-adjacent myotomes. Stimulation through both adjacent and sub-adjacent nerves results in muscle action potentials. Each adjacent nerve supplies 2-5 axons to a given fibre. A typical fibre is probably innervated by around 4-6 axons, and pre-terminal branching accounts for the 8-20 endplates present on these fibres.
The Gatty Marine Laboratory, Dept. of Biology and Preclinical Medicine, St. Andrews University, KY16 8LB, St. Andrews, Fife, Scotland.
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JD
Altringham
I A
IA
Johnston