ISSN:
0021-9541
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
,
Medicine
Notes:
Methods have been developed which permit measurements of cardiac output and sampling of mixed venous and arterial blood in the elasmobrach, Squalus acanthias. These methods have been utilized to characterize some of the parameters involved in gill gas exchange. A total of 17 animals have been studied with the following results. Cardiac output: 1.49±0.57 1/kg/hr.; V̇o2: 38.3±22.1 ml/kg/hr.; V̇co2: 32.1±19.0 ml/kg/hr.; RER: 0.92±0.17; PaO2: 104±27 mmHg; Pv̄o2: 18±8.8 mmHg; PaCO2: 2.9±0.75 mmHg; Pv̄co2: 4.6±1.1 mmHg; CaO2: 3.8±0.75 vol. %; Cv̄o2: 1.26±0.59 vol. %; pHa: 7.52±0.10 units; Pv̄: 7.42±0.11 units; [HCO3-]a: 3.92± 1.14 meq/1; [HCO3-]v̄: 4.80±1.15 meq/1; [dissolved CO2]a: 0.17± 0.04 mM/1; [dissolved CO2]v̄: 0.24±0.04 mM/1; [lactate-]a: 13.47±7.17 meq/1; [Lactate-]v̄: 13.01±8.18 meq/1. Some of the mechanisms involved in gill gas exchange have been characterized.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jcp.1040670111
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