Respiratory gas exchange by the avian embryo
The mechanism of gas exchange by an avian embryo is discussed in terms of the embryo's changing metabolic rate, a constant egg shell gas permeability and the changing gas tensions inside the shell. Since gas transport across the shell is by diffusion, equations are developed which predict the g...
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| Veröffentlicht in: | Respiration physiology 1970, Vol.11 (1), p.31-45 |
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| container_title | Respiration physiology |
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| creator | Wangensteen, O.Douglas Rahn, Hermann |
| description | The mechanism of gas exchange by an avian embryo is discussed in terms of the embryo's changing metabolic rate, a constant egg shell gas permeability and the changing gas tensions inside the shell. Since gas transport across the shell is by diffusion, equations are developed which predict the gas composition in the air cell of the egg as well as the rate of exchange of O
2 CO
2 and water vapor. P
O
2
and P
CO
2
values were obtained from the air cells of chick embryos of various ages, and when these results are considered together with metabolic rate and measured egg shell permeability data they are found to be consistent with the hypothesis that gas exchange by the avian embryo is limited by diffusion through its porous shell. The implications of this are discussed in terms of water vapor loss from the egg during incubation, development of the embryo's blood buffer system and the importance of the permeability of the egg shell to embryo survival. |
| doi_str_mv | 10.1016/0034-5687(70)90100-3 |
| format | Article |
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2 CO
2 and water vapor. P
O
2
and P
CO
2
values were obtained from the air cells of chick embryos of various ages, and when these results are considered together with metabolic rate and measured egg shell permeability data they are found to be consistent with the hypothesis that gas exchange by the avian embryo is limited by diffusion through its porous shell. The implications of this are discussed in terms of water vapor loss from the egg during incubation, development of the embryo's blood buffer system and the importance of the permeability of the egg shell to embryo survival.</description><identifier>ISSN: 0034-5687</identifier><identifier>DOI: 10.1016/0034-5687(70)90100-3</identifier><identifier>PMID: 5491114</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Animals ; Avian embryo ; Carbon dioxide ; Carbon Dioxide - analysis ; Carbon Dioxide - metabolism ; Chick Embryo - metabolism ; Diffusion ; Egg shell ; Gas exchange ; Nitrogen - metabolism ; Oxygen ; Oxygen - analysis ; Oxygen Consumption ; Partial Pressure ; Permeability ; Respiration ; Water - metabolism ; Water vapor</subject><ispartof>Respiration physiology, 1970, Vol.11 (1), p.31-45</ispartof><rights>1970</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c338t-52d5966f8163b9f41f2e42742a77869236832c38a1f329392b2a57b98fcd39943</citedby><cites>FETCH-LOGICAL-c338t-52d5966f8163b9f41f2e42742a77869236832c38a1f329392b2a57b98fcd39943</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/5491114$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wangensteen, O.Douglas</creatorcontrib><creatorcontrib>Rahn, Hermann</creatorcontrib><title>Respiratory gas exchange by the avian embryo</title><title>Respiration physiology</title><addtitle>Respir Physiol</addtitle><description>The mechanism of gas exchange by an avian embryo is discussed in terms of the embryo's changing metabolic rate, a constant egg shell gas permeability and the changing gas tensions inside the shell. Since gas transport across the shell is by diffusion, equations are developed which predict the gas composition in the air cell of the egg as well as the rate of exchange of O
2 CO
2 and water vapor. P
O
2
and P
CO
2
values were obtained from the air cells of chick embryos of various ages, and when these results are considered together with metabolic rate and measured egg shell permeability data they are found to be consistent with the hypothesis that gas exchange by the avian embryo is limited by diffusion through its porous shell. The implications of this are discussed in terms of water vapor loss from the egg during incubation, development of the embryo's blood buffer system and the importance of the permeability of the egg shell to embryo survival.</description><subject>Animals</subject><subject>Avian embryo</subject><subject>Carbon dioxide</subject><subject>Carbon Dioxide - analysis</subject><subject>Carbon Dioxide - metabolism</subject><subject>Chick Embryo - metabolism</subject><subject>Diffusion</subject><subject>Egg shell</subject><subject>Gas exchange</subject><subject>Nitrogen - metabolism</subject><subject>Oxygen</subject><subject>Oxygen - analysis</subject><subject>Oxygen Consumption</subject><subject>Partial Pressure</subject><subject>Permeability</subject><subject>Respiration</subject><subject>Water - metabolism</subject><subject>Water vapor</subject><issn>0034-5687</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1970</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kFtLw0AQhfdBqbX6DxTyJApG95a9vAhSvEFBEH1eNpvZdqVJ6m5azL83tcVHn4aZc84M8yF0RvANwUTcYsx4XgglLyW-0phgnLMDNP4bH6HjlD7x0AssRmhUcE0I4WN0_QZpFaLt2thnc5sy-HYL28whK_usW0BmN8E2GdRl7NsTdOjtMsHpvk7Qx-PD-_Q5n70-vUzvZ7ljTHV5QatCC-EVEazUnhNPgVPJqZVSCU2ZUIw6pizxjGqmaUltIUutvKuY1pxN0MVu7yq2X2tInalDcrBc2gbadTIKy4JhrAYj3xldbFOK4M0qhtrG3hBstmDMloDZEjASm18whg2x8_3-dVlD9RfaUxn0u50Ow5ObANEkF6BxUIUIrjNVG_4_8APaAXEr</recordid><startdate>1970</startdate><enddate>1970</enddate><creator>Wangensteen, O.Douglas</creator><creator>Rahn, Hermann</creator><general>Elsevier B.V</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>1970</creationdate><title>Respiratory gas exchange by the avian embryo</title><author>Wangensteen, O.Douglas ; Rahn, Hermann</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c338t-52d5966f8163b9f41f2e42742a77869236832c38a1f329392b2a57b98fcd39943</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1970</creationdate><topic>Animals</topic><topic>Avian embryo</topic><topic>Carbon dioxide</topic><topic>Carbon Dioxide - analysis</topic><topic>Carbon Dioxide - metabolism</topic><topic>Chick Embryo - metabolism</topic><topic>Diffusion</topic><topic>Egg shell</topic><topic>Gas exchange</topic><topic>Nitrogen - metabolism</topic><topic>Oxygen</topic><topic>Oxygen - analysis</topic><topic>Oxygen Consumption</topic><topic>Partial Pressure</topic><topic>Permeability</topic><topic>Respiration</topic><topic>Water - metabolism</topic><topic>Water vapor</topic><toplevel>online_resources</toplevel><creatorcontrib>Wangensteen, O.Douglas</creatorcontrib><creatorcontrib>Rahn, Hermann</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Respiration physiology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wangensteen, O.Douglas</au><au>Rahn, Hermann</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Respiratory gas exchange by the avian embryo</atitle><jtitle>Respiration physiology</jtitle><addtitle>Respir Physiol</addtitle><date>1970</date><risdate>1970</risdate><volume>11</volume><issue>1</issue><spage>31</spage><epage>45</epage><pages>31-45</pages><issn>0034-5687</issn><abstract>The mechanism of gas exchange by an avian embryo is discussed in terms of the embryo's changing metabolic rate, a constant egg shell gas permeability and the changing gas tensions inside the shell. Since gas transport across the shell is by diffusion, equations are developed which predict the gas composition in the air cell of the egg as well as the rate of exchange of O
2 CO
2 and water vapor. P
O
2
and P
CO
2
values were obtained from the air cells of chick embryos of various ages, and when these results are considered together with metabolic rate and measured egg shell permeability data they are found to be consistent with the hypothesis that gas exchange by the avian embryo is limited by diffusion through its porous shell. The implications of this are discussed in terms of water vapor loss from the egg during incubation, development of the embryo's blood buffer system and the importance of the permeability of the egg shell to embryo survival.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>5491114</pmid><doi>10.1016/0034-5687(70)90100-3</doi><tpages>15</tpages></addata></record> |
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| ispartof | Respiration physiology, 1970, Vol.11 (1), p.31-45 |
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| language | eng |
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| source | MEDLINE; Alma/SFX Local Collection |
| subjects | Animals Avian embryo Carbon dioxide Carbon Dioxide - analysis Carbon Dioxide - metabolism Chick Embryo - metabolism Diffusion Egg shell Gas exchange Nitrogen - metabolism Oxygen Oxygen - analysis Oxygen Consumption Partial Pressure Permeability Respiration Water - metabolism Water vapor |
| title | Respiratory gas exchange by the avian embryo |
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