NADPH-diaphorase reactivity in nerves supplying the rat anococcygeus muscle

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    Abstract

    NADPH-diaphorase histochemistry was used to establish the nature of neurons and nerve fibers in the rat anococcygeus muscle. NADPH-diaphorase-reactive nerve cell bodies were found in ganglia in the caudal dorsal fascia of the muscle and within the muscle itself. The reactive nerve cells had a relatively smooth surface and a single axon. They formed bundles of positive nerve fibers which entered the muscle and branched further to form a network extending towards the cranial end. In addition, bundles of NADPH-diaphorase-reactive fibers of extrinsic origin joined the loose plexus of local bundles and microganglia. The NADPH-diaphorase-reactive neurons supplying the rat anococcygeus muscle provide a neuroanatomical basis for the non-adrenergic non-cholinergic relaxation of the muscle mediated by nitric oxide.

    Original languageEnglish
    Pages (from-to)221-224
    Number of pages4
    JournalNeuroscience Letters
    Volume158
    Issue number2
    DOIs
    Publication statusPublished - 20 Aug 1993

    Keywords

    • Anococcygeus muscle
    • NADPH-diaphorase
    • Nitric oxide synthase
    • Rat

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