PMID: 751Jun 1, 1975

Oxygen and carbon dioxide dissociation of duck blood

Respiration Physiology
G ScheipersP Scheid

Abstract

Oxygen and CO2 dissociation of duck blood was studied in blood samples equilibrated with known gas mixtures at the bird's body temperature (41 degrees C) and analyzed in the Van Slyke manometric apparatus and in pH electrodes. At various pH values between 7.38 and 7.55 the Hill plots yielded straight and parallel lines over a wide range of O2 saturation, the Hill coefficient being 2.9. Half saturation pressure P50 at pH = 7.50 was 36 torr. The Bohr effect factor was -0.53. Buffering properties were analyzed by equilibrating blood samples with gas mixtures of different PCO2 at 41 degrees C. The buffer value for whole blood in the range of 3-7% CO2 was 19.3 mMol-L-1-pH-1, the buffer value for true plasma 22.9 mMol-L-1-pH-1. The CO2 dissociation curve constructed using the buffer values had a slope of 0.17 mMol-L-1-torr-1 in the PCO2 range from 40 to 50 torr. The CO2 content of oxygenated blood at PCO2 = 40 torr was 21.7 mMol-L-1. The Haldane effect factor at PCO2 = 35 torr equalled 0.30 mMol of combined CO2 per mMol HbO2. With the values of PO2, PCO2 and pH measured in arterial blood of undisturbed and unrestrained, resting ducks effective dissociation curves for both O2 and CO2 were constructed assuming a metabolic R.Q. of 0.8. ...Continue Reading

References

Apr 1, 1975·Respiration Physiology·T Kawashiro, P Scheid
Jan 1, 1975·Pflügers Archiv : European journal of physiology·P Scheid, H Salama
Mar 1, 1975·Respiration Physiology·J Piiper, P Scheid
Apr 1, 1973·Respiration Physiology·P L LutzK Schmidt-Nielsen
Jun 1, 1974·Respiration Physiology·P L LutzK Schmidt-Nielsen
Apr 1, 1972·Respiration Physiology·T E Nightingale, M R Fedde
Mar 1, 1972·Respiration Physiology·H R Duncker
Dec 1, 1971·Respiration Physiology·J PiiperH Rahn
Mar 1, 1971·Respiration Physiology·B HenningJ Piiper
Mar 1, 1971·Respiration Physiology·P Scheid, J Piiper
Apr 1, 1968·Proceedings of the Society for Experimental Biology and Medicine·H M FRANKEL, D Frascella
Jan 1, 1966·Respiration Physiology·H BartelsW Reinhardt
Dec 1, 1967·Respiration Physiology·L A Danzer, J E Cohn
May 1, 1965·Proceedings of the Society for Experimental Biology and Medicine·H M FRANKEL

Citations

Jan 1, 1975·Pflügers Archiv : European journal of physiology·P Scheid, H Salama
Nov 14, 1978·Pflügers Archiv : European journal of physiology·J P WeingartenP Scheid
Sep 29, 1978·Pflügers Archiv : European journal of physiology·M MeyerP Scheid
Apr 1, 1975·Respiration Physiology·T Kawashiro, P Scheid
Feb 1, 1976·Respiration Physiology·H MagnussenP Scheid
May 1, 1977·Respiration Physiology·J P HolleP Scheid
Aug 1, 1977·Respiration Physiology·P L Lutz, K Schmidt-Nielsen
Dec 1, 1977·Respiration Physiology·F H Baumann, R Baumann
Nov 1, 1978·Respiration Physiology·G Lykkeboe, K Johansen
Oct 1, 1978·Respiration Physiology·W D Crank, R R Gallagher
Mar 1, 1980·Respiration Physiology·C Bech, K Johansen
Nov 1, 1983·Respiration Physiology·G N Lapennas
Jan 1, 1982·Comparative Biochemistry and Physiology. A, Comparative Physiology·S Long
Jan 1, 1978·Comparative Biochemistry and Physiology. C: Comparative Pharmacology·G W Kollias, I McLeish
Jan 1, 1979·Computers in Biology and Medicine·S C HemplemanR E Burger
Jul 4, 2018·The Journal of Experimental Biology·John S Terblanche, H Arthur Woods

Related Concepts

Ampholytes
Carbon Dioxide
Ducks
Eryhem
Hydrogen-Ion Concentration
Dioxygen

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