A survey of the new findings presented and the discussions arising during sessions I, II and lII

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Abstract
One of the earliest studies on the physiology of smooth muscle was that reported by Engelmann over 100 years ago. In setting the stage for this discussion on new developments in smooth muscle physiology, Professor Bozler recalled Engelmann’s description of the ureter as a ‘giant hollow muscle fibre’. Recent work on the passive electrical properties of smooth muscle has shown that Engelmann’s concept of the syncytial behaviour of smooth muscle is true for a great many smooth muscles - perhaps for all vertebrate smooth muscles. When smooth muscle cells come into contact they interact with each other so as to form a tissue. In this sense, a community of smooth muscle cells is analogous with the liver, epithelial tissues and the heart. One can contrast this ‘collective’ behaviour of smooth muscle cells with the separate identity maintained by most nerve cells and skeletal muscle fibres.

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