Skip Navigation

American Zoologist 1973 13(2):469-473; doi:10.1093/icb/13.2.469
© 1973 by The Society for Integrative and Comparative Biology
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Request Permissions
Google Scholar
Right arrow Articles by ADOLPH, E. F.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Physiological Adaptations in Hypoxia in Infant Mammals

E. F. ADOLPH
Department of Physiology, The University of Rochester Rochester, New York 14642

Newborn rats exposed at 37 C to pure nitrogen continue to breathe slowly for 22 minutes. As they grow older the time to the last breath diminishes, and the pattern of breath frequencies changes. At 4 to 11 days of age pretreatment with hypoxia for a few hours prolongs the time to last breath for 40 to 75%. To that prolongation (physiological adaptation) may be added the smaller effect of immediate glucose injection. Neither prolongation is available in the first two days after birth. The adaptation appears to modify the regulation of anaerobic breathing in the medulla oblongata, which acquires this specific superfunction in response to the pretreatment with hypoxia.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.