Respiratory+System+notes-+kat

We need to breath to get oxygen in our body for energy. media type="file" key="practicetestforbiokat.mov"
 * Cellular Respiration: happens in all of your cells
 * food (glucose) + oxygen (oxygen gas, 2 atoms of oxygen, electron magnet) -->release energy the waste is **CO2+H2O**
 * Fermentation
 * food--> little energy the waste is **CO2** and **Lactic Acid**
 * Respiratory system**
 * System that helps you breath in and out.
 * oxygen in, carbon dioxide out (removed form blood)
 * parts of system:
 * nasal cavity (nose--> hair and mucus, sinuses)
 * pharynx (**trachea**: wind pipe or **esophagus**)
 * two lungs
 * bronchus
 * bronchioles
 * air sacs: alveoli (400 million alveoli, 100 meters squared)
 * gas exchange
 * blood