Gas-Exchange Efficiency of Fish Gills and Bird Lungs

  • Johannes Piiper
Conference paper

DOI: 10.1007/978-1-4612-3556-9_13

Cite this paper as:
Piiper J. (1989) Gas-Exchange Efficiency of Fish Gills and Bird Lungs. In: Paganelli C.V., Farhi L.E. (eds) Physiological Function in Special Environments. Springer, New York, NY

Abstract

A simplified general functional schema of gas-exchange organs (Piiper 1982; Piiper and Scheid 1975, 1982a) is shown in Fig. 13.1. Medium, with flow date V, and blood, with flow rate Q, come into gas-exchange contact, leading to O2 uptake by blood and CO2 output from blood. The better the gas-transfer conditions, the closer come PO2 and PCO2 in medium and blood. a complete “overlap” (arterial equal inspired, venous equal expired partial pressure), as shown in case 4 of Fig. 13.1, can only be reached with an ideal countercurrent system, i.e., lacking diffusion limitation, and with perfect matching of blood and gas conductances (Piiper and Scheid 1982b, 1984).

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Copyright information

© Springer-Verlag New York Inc. 1989

Authors and Affiliations

  • Johannes Piiper

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