Respiratory System

The human body is a complex living organism made up of trillions of cells. The body includes several major organ systems, each composed of various organs and tissues that work together to do specific jobs. Your respiratory system takes in oxygen that you need to live and gets rid of the carbon dioxide wastes from your cells. This theme unit will inform you about the organs that work together to make up your hard-working respiratory system and the job your respiratory system does for you every minute of every day, without you even having to think about it!