Modulation of duck intrapulmonary chemoreceptor discharge by cardiac activity

T. P. Adamson, Steven C Hempleman, R. E. Burger

Research output: Contribution to journalArticle

Abstract

A previous study on duck intrapulmonary chemoreceptors (IPC) reported that the cardiac cycle modulated discharge of most IPC, but did not distinguish whether pulsatile blood flow or cardiac-linked fluctuation in parabronchial gas flow was responsible. In this study with Pekin ducks one of 14 IPC recorded was found to be modulated by cardiac activity in the perfused lung, and none in the non-perfused lung. Discharge variability expressed as coefficients of variation did not change with pulmonary artery ligation. It is concluded that: (1) pulsatile blood flow does not affect discharge regularity of most IPC and (2) the infrequent occurrence of cardiac modulation of IPC in thoracotomized ducks may be the result of IPC having receptive endings near the parabronchial lumen.

Original languageEnglish (US)
Pages (from-to)597-599
Number of pages3
JournalJournal of Comparative Physiology B
Volume159
Issue number5
DOIs
StatePublished - Sep 1989
Externally publishedYes

Fingerprint

chemoreceptors
Ducks
ducks
Pulsatile Flow
Blood
Modulation
blood
Flow of gases
Lung
gas flow
blood flow
Pulmonary Artery
Ligation
Gases
lungs
Pekin
pulmonary artery
gases

Keywords

  • Cardiac modulation
  • Discharge interval variability
  • Intrapulmonary chemoreceptor location

ASJC Scopus subject areas

  • Physiology (medical)
  • Environmental Science(all)
  • Physiology
  • Animal Science and Zoology

Cite this

Modulation of duck intrapulmonary chemoreceptor discharge by cardiac activity. / Adamson, T. P.; Hempleman, Steven C; Burger, R. E.

In: Journal of Comparative Physiology B, Vol. 159, No. 5, 09.1989, p. 597-599.

Research output: Contribution to journalArticle

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