RESPIRATORY SYSTEM

UNIR: HOW DOES MY RESPIRATORY SYSTEM WORK?. YOUR BODY NEEDS OXYGEN TO FUNCTION. THE RESPIRATORY SYSTEM ALLOWS US TO BREATHE. CARBON DIOXIDE LEAVES YOUR BODY WHEN YOU BREATHE OUT. THE DIAPHRAGM CONTRACTS TO PUSH AIR OUT OF THE LUNGS. THE LUNGS ABSORB OXYGEN FROM THE AIR AND PASS IT TO THE BLOOD. CARBON DIOXIDE PASSES FROM THE BLOOD TO THE LUNGS. THE AIR TRAVELS DOWN A TUBE CALLED THE TRACHEA TO THE LUNGS. AIR ENTERS YOUR BODY THROUGH YOUR NOSTRILS OR MOUTH WHEN YO BREATHE IN.

UNIR: OXYGEN. BREATHE OUT. DIAPHRAGM. LUNGS. BLOOD. CARBON DIOXIDE. TRACHEA.