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Movement of oxygen and carbon dioixde throughout the body (Respiration…
Movement of oxygen and carbon dioixde throughout the body
Oxygen transport
Inhalation
Windpipe
Bronchi
Alveoli (gas exchange)
O2 diffuses into blood
O2 bounds to hemoglobin
Oxyhemoglobin then releases oxygen into body cells
Carbon dioxide transport
Cell metabolism generates CO2
Diffuses into systemic capillaries
CO2 is carried into lungs
Part of a compound from hemoglobin
Part of bicarbonate ions
Dissolved in plasma
Carbaminohemoglobin
Bicarbonate ions diffuse out of red blood cells
Blood passes through capillaries
Dissolved CO2 diffuses in the alveoli
Exhalation
Respiration
Ventilation
Movement of air into and out of lungs (breathing)
External Respiration
Exchange of gases between air in the lungs and blood
Internal Respiration
Exchange of gases between the blood and the body cells
Cellular Respiration
O2 use and CO2 production by body cells as part of the process