Lungs and Respiratory System

respiratory system  When we breathe, the respiratory system takes in oxygen and sends out carbon dioxide The cells in our bodies need fresh oxygen to stay alive  The respiratory system is responsible for taking in oxygen and expelling carbon dioxide The main organs are the lungs, which work in

The respiratory system starts at the nose and mouth and continues through the airways and the lungs Air enters the respiratory system through the nose and Your lungs make up a large part of your respiratory system, which is the network of organs and tissues that allow you to breathe You have two lungs, one on

The upper respiratory tract consists of the nose, mouth, sinuses, pharynx , and larynx  The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat ,