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Gas Exchange - Coggle Diagram
Gas Exchange
Carbon dioxide's journey out
Cellular respiration releases CO2
Heat
Hemoglobin + CO2 = carbaminohemoglobin
Decreased pH
Reaches capillaries at alveoli
CO2 moves down pressure gradient
Response to low CO2
H+ recombines with bicarbonate
More CO2 enters alveoli
CO2 binds H2O = bicarbonate ions
Dissociates into hydrogen ions
H+ ride deoxyhemoglobin
Oxygen's journey in
Inhalation
Upper respiratory
Lower respiratory
Alveolar membrane
O2 passes into capillaries
O2 + iron = oxyhemoglobin
Travels through body
Areas with little O2
Heated areas
Decreased pH areas
oxyhemoglobin - O2 = hemoglobin
O2 used for cellular respiration
78% Nitrogen
21% Oxygen
Other gases
Influence of pressure
Move high to low
O2 from alveoli
Alveolar PO2 104mmHg
Capillary PO2 40mmHG
CO2 from capillaries
Alveolar PCO2 40mmHG
Capillary PCO2 45mmHG