respiratory system
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respiratory system
is an intricate arrangement of spaces, passageways, and organs that serve to conduct air into the lungs to supply oxygen to individual tissue cells and to remove gaseous waste. (carbon dioxide)
ventilation
refers to the movement of air to and from the alveoli, or air sacs of the lung, and the mixing of ( o2,co2) gasses.
respiration
refers to the exchange of oxygen and carbon dioxide. ( the actual absorption and utilization of oxygen)
external respiration
takes place only in the alveoli of the lungs. oxygen outside air enters the blood, and carbon dioxide is removed
internal respiration ( also called cellular respiration)
Refers to gas exchanges within the body cells. Oxygen leaves the blood and enters cells, while carbon dioxide leaves the cells and enters the blood
eupnea
EU =( normal plus pnea = breathing)