What is the difference between internal and external respiration?

Answer 1

External Respiration is the exchange of O2 and CO2 between the body and the environment. It involves moving air in and out of the lungs and the exchange of gases between the alveoli and the blood capillaries.

The gases must also be exchanged between the blood capillaries and the cells of the body. This is called internal respiration. Some sources say this is the same as tissue respiration, but to me that means the chemical reactions which take place in our cells to release energy, the most usual of which is glucose + oxygen --> carbon dioxide and water.

Answer 2

Internal Respiration:it takes place inside every cell using O2 to break down glucose sugar and to produce energy and produce water and CO2.external respiration:it takes place outside the cell,it includes the movement which draw air into the lungs and push it out of the lungs.

Answer 3

External Respiration takes place outside of the body, internal takes place in the body.