Question

what is external respiration ?​

Answer 1

External respiration is the formal term for gas exchange. It describes both the bulk flow of air into and out of the lungs and the transfer of oxygen and carbon dioxide into the bloodstream through diffusion.

Hope this will help you...

Answer 2

External respiration , also known as breathing, involves both bringing air into lungs (inhalation) and releasing air to atmosphere (exhalation).