EHS 385 Lecture Notes - Lecture 20: Exercise Physiology, Gas Exchange, Body Fluid

• School: UMass Boston
• Department: Exercise and Health Science
• Course: EHS 385
• Professor: Rachel Drew

Document Summary

Pulmonary respiration: ventilation (breathing, exchange o2 and co2 in lungs. Purposes of respiratory system during exercise: gas exchange b/w environment and body, regulation of acid-base balance during exercise, acid-base balance = balance of acids + bases in body fluid. Gas exchange b/w external environment and body: replace o2, remove co2, regulate acid-base balance. Ventilation: moving air in and out of lungs. Diffusion: molecules move from area of high concentration to area of low concentration. Pulmonary ventilation: move respiratory gases b/w external environment and gas exchange region of lung (alveolar region) Alveolar gas exchange: move respiratory gases b/w alveolar region of lungs and blood, o2 diffuses from lungs to blood, co2 diffuses from blood to lungs. Circulatory gas transport: transport respiratory gases in blood b/w lungs and cells. Systemic gas exchange: move respiratory gases from blood to cells, o2 diffuses from blood to cells, co2 diffuses from cells to venous blood.