Question

(a) What is the function of the respiratory system?
(b) What are the major organs of respiratory system in man (or humans)?
(c) Draw a labelled diagram of the human respiratory system.

Answer 1

(a) The main function of the respiratory system is to breathe in oxygen for respiration and to breathe out carbon dioxide, and to provide energy to the body by the breaking down the food particles.

(b) The major organs of respiratory system in a human being are nose, nasal passage, trachea, bronchi, lungs and diaphragm.

(c) Human Respiratory System: