Describe disorders of respiratory system.

Air is filtered in this part of respiratory system.

Diffusion of oxygen occurs in the alveolar region only and not in other parts of respiratory system. How do you justify the statement ?

Choose the correct Answer The part of respiratory system which branches into

Which of the following is not a structure of respiratory system?

Describe the blood circulatory system of periplaneta in detail and draw a neat and labelled diagram of it .,

Function of conducting part of respiratory system is