Adaptation to altitude hypoxia lect09

Adaptation to altitude hypoxia lect09 - Reading assignments...

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Reading assignments (November 9-13) A.R. Frisancho, (2006) Humankind Evolving . Chapter 20. (Textbook)
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Human Adaptation to High Altitude Hypoxia Physiological & Morphological Responses NS/Anth 2750 November 9, 2009
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Why Study High Altitude Adaptations ? Chronic hypoxic stress easy to document pervasive over generations Clear biological consequences Few cultural buffers Traditional lifeways preserved Potential to demonstrate natural selection
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From Grover 1979 o Ithaca Barometric pressure and inspired oxygen pressure decreases with increasing altitude . At La Paz, Bolivia (12,500ft), the inspired oxygen pressure (partial pressure of oxygen) is 65% of sea level pressure .
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La Paz, Bolivia -- 3700 m
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gradient involved in respiration. All pressures in mm Hg at sea level. Atmospheric air 159 mm Hg Lung alveoli 96 mm Hg Pulmonary blood capillary 90 mm Hg Tissue blood capillary 48 mm Hg Systemic tissue cells 40 mm Hg External
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This note was uploaded on 01/06/2010 for the course NS 2750 taught by Professor Haas&gu during the Fall '08 term at Cornell University (Engineering School).

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Adaptation to altitude hypoxia lect09 - Reading assignments...

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