Definition, Meaning & Synonyms

external respiration

Noun

/ɛkˈstɜrnəl ˌrɛspəˈreɪʃən/

Definition

The process by which oxygen is exchanged for carbon dioxide in the lungs.

Examples

The process of external respiration is crucial for delivering oxygen to the body’s tissues.
During exercise, external respiration increases to meet the body’s heightened demand for oxygen.

Meaning

External respiration refers to the exchange of gases between the atmosphere and the blood through the alveoli in the lungs, allowing oxygen to enter the bloodstream and carbon dioxide to be expelled from it.