Question

explain internal and external respiration

Answer 1

External respiration occurs in the lungs where oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air. Internal respirationoccurs in the metabolizing tissues, where oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells

Answer 2

Medical Definition of internal respiration. : the exchange of gases (as oxygen and carbon dioxide) between the cells of the body and the blood by way of the fluid bathing the cells — compare external respiration.

External respiration occurs in the lungs where oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air. Internal respirationoccurs in the metabolizing tissues, where oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells.