trachea
In this slide i am going to talk about Trachea.Trachea or a windpipe is a tube that carries oxygen from the lungs.This tube is extended from the larynx to the bronchial tubes and it is in front of the esophagus. The trachea is consist of layers of muscular tissues.The little tiny hairs or as we call them cilia,in the mucus are lined up so they can keep dust out of our lungs,so the cilia will keep the dust and it will be send to nose or the mouth where it will leave our body.The air tubes of insects are also called trachea.