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Biol Bull 98: 254-257. (June 1950)
© 1950 Marine Biological Laboratory
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THE ELECTROCARDIOGRAM OF ARENICOLA

C. LADD PROSSER 1

1 Marine Biological Laboratory, and Physiology Department, University of Illinois

The electrocardiogram of Arenicola cristata consists of a rapid negative deflection followed by a positive deflection, often with superimposed oscillations and often followed by a slow negative wave. There is much variability from animal to animal and from time to time at the same position.

The oscillatory nature of the electrocardiogram supports the hypothesis that the heart of Arenicola is neurogenic.






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Copyright © 1950 by the Marine Biological Laboratory.