By M. Moulins, A. I. Selverston (auth.), Prof. Dr. Allen I. Selverston, Prof. Dr. Maurice Moulins (eds.)
This booklet is end result of the a Symposium* equipped by means of the Editors in October 1984 at San Diego. just about all of the current and previous investigators of the Crustacean Stomatogastric apprehensive structures participated. besides the fact that, this ebook are not, in anyway, be thought of a sympo sium document. Its target is to offer not just the newest effects acquired with the program, but additionally a whole and complete view of the con tributions made by way of this practise to basic techniques in neurobiol ogy. This has been attainable merely with the cooperation of all the investiga tors involved and we needs to gratefully thank all of our colleagues who've agreed to enable the authors of the chapters comprise a few unpublished effects. brief appendices were additional to numerous chapters to explain a few key issues that are nonetheless unpublished or to demonstrate in brief a few contemporary promis ing new findings. we might additionally wish to recognize as a complete the numerous journals that have approved us to breed a few unique figures. Maurice Moulins and Allen I. Selverston * Supported by means of the nationwide technology origin and the Centre nationwide de l. a. Re cherche Scientifique. Contents creation. M. Moulins and A.1. Selverston. (With four Figures) . . . . . 1 1 practical Anatomy and behaviour. B.J. Claiborne and J. Ayers (With eleven Figures). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . nine 1.1 sensible Anatomy . . . . . . . . . . . . . . . . . . . .. . . nine . . . . . 1.1.1 Ossicles.. . . . . . . . . . . . . . . . . . . . . . .. . . . nine . . . . . 1.1.2 Musculature . . . . . . . . . . . . . . . . . . . . .. . . eleven . . . . . . 1.1.3 worried process . . . . . . . . . . . . . . . . . . .. . . thirteen . . . . .
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Sample text
The action of 5-HT probably involves a presynaptic action similar to its effect on crustacean limb muscles (Dudel 1965, Glusman and Kravitz 1982). In comparison, OCT similarly produces an increase in EJP amplitude but also a Neuromuscular Organization and Pharmacology A 47 -"""""IlII\\~~~I\m\I_ _ J ""\\""IIIIII\\\\\\\\\mU\\U\\\\\\\\\m\l~mm~~~\\\\II"\\\I\\\\\\I\\\\ Fig. 7 A-C. Effects of serotonin and octopamine. A Effect of 10-' M serotonin (top) and 10-6 M octopamine (bottom) on nerve-evoked contractions of cpvlab muscle of P.
In comparison to the effects of DA on the cpvlab and gm6b muscles of Panulirus, the enhancement produced by 5-HT and OCT is never as great. Although slight responses to either 5-HT or OCT may be observed as low as 5 X 10-8 M, definitive responses are not reliably observed until about 10-7 M 5-HT and 5 X 10-7 M OCT. Some preparations fail to exhibit any response to either OCT or 5-HT at concentrations up to 5 X 10-7 M. A decrease in the sensitivity to 5-HT and OCT occurs with repeated applications and some freshly isolated muscles may exist in a refractory state.
TOe). Knowing the sequence of activity of the different pyloric muscles is not adequate to describe the behavior, which consists in a sequence of movements throughout the different regions of the pylorus. It has generally been thought that the extrinsic muscles were dilators, while the intrinsic muscles were constrictors. With this in mind, the sequence can be summarized as follows . l ). 2). 2. 14) and the cycle repeats. P. Miller (1985), it is probable that this scheme is too simple. The inner surface of the pyloric chamber is covered with cuticular specializations dividing the pylorus into an anterior dorsal chamber separated from a ventral posterior scrubber region by a slit valve (Fig.