​Main function

​gas exchange

inhale oxygen to release carbon dioxide

fun fact: When you exhale you breathe out a little bit of water.

​Parts of the respiratory system

​Airways (throat)

Lungs

blood vessles

muscles

​Diaphragm

​Is the main muscle that helps inhalation

fun fact: hiccups are caused by involuntary contraction of the diaphragm

​Pharynx

​is the name for the throat

​Fun Fact

​your lungs contain almost 1500 miles of airway tubing.

​When you inhale oxygen

1. nose

2. trachea

3. bronchi

4. lungs

​Alveoli are the tiny sacs that allow oxygen and carbon dioxide to move between the lungs.

​Trachea

​known as the windpipe, allows air to flow to the lungs.

​The cardiovascular system works together with the respiratory system to circulate blood and oxygen throughout the body.