Onset of and recovery from diving bradycardia in ducks.

@article{Butler1968OnsetOA,
  title={Onset of and recovery from diving bradycardia in ducks.},
  author={Patrick J. Butler and David R. Jones},
  journal={The Journal of physiology},
  year={1968},
  volume={196 2},
  pages={
          255-72
        }
}
1. No evidence was found of a ;postural reflex' in ducks. Neither the position of the head nor the water temperature affected the cardiac response to diving.2. In ducks with access to air through a tracheal cannula, submersion did not invariably cause apnoea until the water level reached the glottis. Heart rate was closely related to respiratory frequency, and bradycardia did not occur during submersion unless there was a reduction in respiratory frequency or a cessation of ventilation… CONTINUE READING

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