Studies on the Myoneural Physiology of Echinodermata

Studies on the Myoneural Physiology of Echinodermata. Iv. the Lantern Retractor Muscle of Parechinus: Responses to Stimulation by Light.

The jaw apparatus of the regular echinoids is moved by a complex of muscles. Of these the largest and most accessible are the lantern retractor muscles which originate on the auricles and insert upon the pyramids which enclose the teeth. Preliminary experiments using Parechinus angulosus Mortensen showed that, while in this species these muscles could not be stimulated indirectly by way of elec...

Studies on the Myoneural Physiology of Echinodermata. v. the Lantern Retractor Muscle of Parechinus: Responses to Drugs.

Although it has been known for many years that certain muscles of echinoderms are responsive to acetylcholine (ACh) (Bacq, 1935, i937> 1939; de Buy 1936; Iriye & Dille, 1940; Sawaya, 1951; Prosser & Judson, 1952; Ambache & Sawaya, 1953; Florey & McLennan, 1959) further studies on the pharmacology of these muscles have mostly been limited in scope. We have recently developed a preparation of the...

The physiology and pathophysiology of the myoneural junction.

survey on the rule of the due & hindering relying on the sheikh ansaris ideas

قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...

analysis of reading comprehension needs of the students of paramedical studies: the case of the students of health information management (him)

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