Neurohemal organ extracts effect the ventilation oscillator in crustaceans. |
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Authors: | A Berlind |
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Abstract: | Extracts of the pericardial organs of crabs injected into intact animals cause an increase in the frequency of scaphognathite beating. The active factor is not dopamine of 5-hydroxytryptamine, which are present in pericardial organs; it is probably a peptide. The factor may represent a hormonal mechanism of coordinating heart rate and ventilation. |
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