
Michael B. answered 01/26/17
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This is actually true. External Respiration occurs in the lungs when gases are exchanged between capillaries in the alveoli and the inhaled air (oxygen into the bloodstream and CO2 out). Internal Respiration is the gas exchange between the bloodstream and cells throughout the body.
http://www.med-health.net/Internal-And-External-Respiration.html
http://www.med-health.net/Internal-And-External-Respiration.html