Respiratory System:-

The process of exchange of O2 from the atmosphere with Co2 produced by the cells is called Breathing, commonly known as Respiration.

The respiratory system consists of the many parts like a Nose, pharynx(throat), larynx (voice box), trachea( windpipe), Bronchi and Lungs.

The Respiratory system has the following function:- 

1) Help in gaseous exchange- intake of oxygen for delivery to body cells and elimination of carbon dioxide produced by the cells.

2)Helps to regulate blood pH.

3)Contains receptors of a sense of smell, Produced vocal sounds(phonation), and excretes the small amount of water and heat.Filter inspired air,