The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide, in other words it helps us breath. There are 3 reasons why the respiratory system is so important. It helps us breath,it helps us get energy,it gets oxygen to our blood.As we breathe, oxygen enters the nose or mouth and passes the sinuses, which are hollow spaces in the skull. Sinuses help regulate the temperature and humidity of the air we breathe.

Comment Stream