par Estenne, Marc 
Référence Gravity and the Lung: Lessons from Microgravity, CRC Press, page (75-92)
Publication Publié, 2001-01
Référence Gravity and the Lung: Lessons from Microgravity, CRC Press, page (75-92)
Publication Publié, 2001-01
Partie d'ouvrage collectif
| Résumé : | The nonnal respiratory system is exquisitely sensitive to gravity, which causes regional differences in intrapleural pressure, alveolar size, ventilation and perfusion, gas exchange, and parenchymal stresses within the lungs (1-3), and determines the configuration of the relaxed chest wall (4). Despite this susceptibility, the number of experimental observations on the respiratory system under conditions of microgravity has been limited due to the difficulty in creating gravityfree environment, which can only be produced during space flights or aboard high-powered jet airplanes flying through a parabolic trajectory. In this chapter, we consider the effects of changing vertical acceleration (Gz) on lung and chest wall mechanics. Most data in this area have been collected over the last 10 years during parabolic flights and shuttle missions. |
