| Replacement of diffusive by convective gas transport in the developing hen's egg. | |
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MedLine Citation:
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PMID: 6410478 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Comparison of diffusive and convective transport equations for O2, CO2 or H2O in the gas-phase shows that for the same gas flux (ml . day-1) and the same pressure difference (Torr) one can substitute an effective air ventilation, VA (ml . day-1), for a given diffusive conductance, G, (ml . day-1. Torr-1). The theoretical relation is: VA = (RT) . G. Thus air ventilation of 865 ml . day-1 (BTPS) is required for each unit of G. This relation was tested in the developing chick embryo (days 15 to 19) by continuously ventilating the air space beneath the shell while the egg was maintained at 37.8 degrees C in air or submerged. During this exposure normal development, oxygen uptake, and gas tensions were maintained, verifying the theoretical prediction. |
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Authors:
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A H Visschedijk; H Rahn |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Respiration physiology Volume: 52 ISSN: 0034-5687 ISO Abbreviation: Respir Physiol Publication Date: 1983 May |
Date Detail:
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Created Date: 1983-09-09 Completed Date: 1983-09-09 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0047142 Medline TA: Respir Physiol Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 137-47 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Carbon Dioxide Chick Embryo Female Immersion Ovum / growth & development, physiology* Oxygen Partial Pressure Respiration* Respiratory Dead Space |
| Grant Support | |
ID/Acronym/Agency:
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HL 14414/HL/NHLBI NIH HHS; HL-28452/HL/NHLBI NIH HHS |
| Chemical | |
Reg. No./Substance:
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124-38-9/Carbon Dioxide; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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