THE NERVOUS MECHANISMS OF THE MUSCULARIS MUCOSAE

Abstract
The muscularis mucosae of the small and large intestine of the dog is innervated by both cholinergic and adrenergic motor nerves. Meissner''s plexus contains ganglion cells the endings of which are cholinergic, and also cells with adrenergic endings. No conclusive evidence has been obtained for the presence of an inhibitory neural mechanism in the muscularis mucosae. The rhythmic movements of the muscularis mucosae are basically myo-genic, but can be initiated or augmented through its ner-vous mechanism. The muscularis mucosae may play an important mechanical role not directly connected with the processes of secretion and absorption.

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