title: Diving mammals.
abstract: The ability of diving mammals to forage at depth on a breath hold of air is dependent on gas exchange, both in the lung and in peripheral tissues. Anatomical and physiological adaptations in the respiratory system, cardiovascular system, blood and peripheral tissues contribute to the remarkable breath-hold capacities of these animals. The end results of these adaptations include efficient ventilation, enhanced oxygen storage, regulated transport and delivery of respiratory gases, extreme hypoxemic/ischemic tolerance, and pressure tolerance.
authors.affiliation: Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA. pponganis@ucsd.edu
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Ponganis
mesh_terms: D000222:Adaptation, Physiological / Q000502:physiology; D000818:Animals; D002245:Carbon Dioxide / Q000097:blood; D004242:Diving / Q000502:physiology*; D006439:Hemodynamics / Q000502:physiology; D008168:Lung / Q000033:anatomy & histology; D008322:Mammals / Q000033:anatomy & histology / Q000502:physiology*; D010100:Oxygen / Q000097:blood; D010101:Oxygen Consumption / Q000502:physiology; D010313:Partial Pressure; D015656:Respiratory Mechanics / Q000502:physiology
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen