1. Respiratory System

2. Job of the Respiratory System
Get Oxygen into the body
Get waste gases out of the body
Transports gases to and from the circulatory system

3. Breathing AKA Respiration It is a vital function for living organisms.
When we breathe we
inhale oxygen
exhale carbon dioxide.

4. The Path of Air
Outside to the
Nose
Pharynx
Trachea
Bronchus
Lung

6. The nose will do 3 things to the air we breathe
Filter the air
Warm the air
Provide moisture to the air

7. Process of Breathing
The diaphragm is a large dome shaped muscle at the base of the lungs
It helps pump the carbon dioxide out of the lungs and pull the oxygen into the lungs as it contracts and relaxes
When the diaphragm contracts, oxygen is pulled into the lungs
When the diaphragm relaxes, carbon dioxide is pumped out of the lungs

8. Fun Facts about the Respiratory System
The right lung in humans is larger than the left lung in order to accommodate the heart
The average person breathes in the equivalent of 13 pints of air each minute.
People yawn because the brain detects low levels of oxygen in the lungs and triggers the response so the body will intake a large amount of oxygen.
Hiccups are caused by several things, and are the product of spasms, or sudden movements, in the diaphragm. Eating too fast is one common cause of hiccups
When an irritant such as dust particles come in contact with mucous membranes in the nose, the body gets rid of them by triggering a sneeze. A human sneeze travels quickly. The fasted sneeze on record was 102 miles per hour in speed.
When a human coughs, the droplets that comes out can travel a distance of up to three feet.
We exhale about half a liter of water vapor in a whole day.