Question

describe the respiratory system in human

Answer 1

Our nose has two holes called nostrils .There is a passage in the nose behind the nostrils.This is called nasal passage.The nasal passage joins the nostrils to the trachea it is also called wind pipe .The upper end of trachea has a voice box called larynx.The trachea branches into to smaller tube called bronchial it's lower one to the left lungs and other to the right lungs.

Answer 2

here is your answer

i) When we inhale or exhale through our nose with the help of other organs it is called Respiratory system.