Question

the breathing cycle is a rhythmic whereas exchange of gases is a continuous process?

Answer 1

Alveoli is the part of lungs where the exchange of gases is a continues process

Answer 2

The breathing cycle involves inhalation and exhalation of air due to alternate expansion and contraction of thoracic cavity thus it is a rhythmic process.but exchange of gases is a continuous process as it takes place between the blood and each and every cell by diffusion.