Respiratory system

respiratory system Respiratory system definition: the system by which oxygen is taken into the body and an exchange of oxygen and carbon dioxide takes place; in mammals the

RESPIRATORY SYSTEM definition: 1 the organs that make it possible for you to breathe 2 the organs that make it possible for you… Learn more  operating 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