. The biology of marine animals. Marine animals; Physiology, Comparative. Fig. Effect of Stimulation of the Vagus Nerve on the Heart of Scyliorhinus canicula Time scale, above, 1/sec; stimulation shown on second line from top. Lower two curves, heart contractions; auricle above, ventricle below. Some sinus activity is manifest during vagus-arrest of the auricle. (From von Skramlik (119).). t ISH Fig. Effect of Drugs on the Fish Heart (Squalus acanthias) 1: adrenaline (1 x 10~8); 2: noradrenaline (5 x 10~7); 3: acetylcholine (5 x 10~7) (heart sensitized with physostigmine 4 x 10~5).
. The biology of marine animals. Marine animals; Physiology, Comparative. Fig. Effect of Stimulation of the Vagus Nerve on the Heart of Scyliorhinus canicula Time scale, above, 1/sec; stimulation shown on second line from top. Lower two curves, heart contractions; auricle above, ventricle below. Some sinus activity is manifest during vagus-arrest of the auricle. (From von Skramlik (119).). t ISH Fig. Effect of Drugs on the Fish Heart (Squalus acanthias) 1: adrenaline (1 x 10~8); 2: noradrenaline (5 x 10~7); 3: acetylcholine (5 x 10~7) (heart sensitized with physostigmine 4 x 10~5). (From Ostlund (97).) until the heart is innervated. There is no sympathetic acceleratory supply, either in selachians or teleosts. Evidence dealing with the effect of adrena- line has been rather conflicting. Adrenaline and noradrenaline usually accelerate the elasmobranch heart and increase the force of beat {Squalus,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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Keywords: ., bookcentury1900, booksubjectmarineanimals, booksubjectphysiology
