Which of the following statements is/are correct about breathing?
Statement 1 - Breathing is a voluntary process.
Statement 2 - Breathing is a physical process.
Statement 3 - It is known as external respiration.
Statement 4 - Breathing is same as respiration.
Statement 1, 2 & 3 are correct
Breathing is a physical process that moves air in and out of the lungs. It is also known as external respiration. Breathing can be considered as a voluntary process. Breathing is also called ventilation, which includes both inhalation and exhalation.