diference of breathing and gas exchange

Answer 1

Breathing and gas exchange are both important respiratory processes, but they have different functions and mechanisms.

Breathing, also known as ventilation, is the process of inhaling and exhaling air. It involves the movement of air in and out of the lungs, which allows oxygen to enter the body and carbon dioxide to be expelled. Breathing is controlled by the respiratory system, specifically the diaphragm and intercostal muscles.

Gas exchange, on the other hand, is the process by which oxygen is taken up by the blood and carbon dioxide is released from the blood. This occurs in the lungs, specifically in the alveoli, which are tiny air sacs where gas exchange takes place. Oxygen from the air in the alveoli diffuses into the bloodstream, while carbon dioxide diffuses from the blood into the alveoli to be exhaled.

In summary, breathing is the physical act of moving air in and out of the lungs, while gas exchange is the process by which oxygen and carbon dioxide are exchanged between the lungs and the blood.