Pulmonary respiration is also known as external respiration and cellular respiration is also known as internal

Question

respiration is also known as external respiration and cellular respiration is also known as internal respiration, why?

and What 2 areas, associated with breathing, are located in the Pons?

Answer 1

Regular breathing is known as external respiration because you are actually taking in the external air from the environment and putting it inside your body for use.

Cellular respiration is internal because relies on the air that you breathing during external respiration. The cells are using the oxygen that is put in your body from breathing.

Hope that helps with the first question!