• Corpus ID: 9400587

Short Communication: Contractile Performance of Cephalopod Hearts Under Anoxic Conditions

  title={Short Communication: Contractile Performance of Cephalopod Hearts Under Anoxic Conditions},
  author={William R Driedzic},
  journal={The Journal of Experimental Biology},
  • W. Driedzic
  • Published 1 July 1985
  • Biology
  • The Journal of Experimental Biology
The cephalopod circulatory system includes an efferent systemic ventricle and two afferent branchial hearts. Branchial hearts lack coronary arteries and thus must be nourished by only venous blood. During routine metabolism in normoxic water, oxygen availability to branchial hearts is only a small percentage of that to the systemic heart; during hypoxic excursions the venous oxygen content may, at least transiently, approach zero (Johansen, Brix & Lykkeboe, 1982; Houlihan, Innes, Wells & Wells… 

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