Respiratory+System+Notes+CC


 * We need Oxygen and Food in our body for Energy


 * Without Food and Oxygen we would have no energy


 * We can't get energy out of food without oxygen


 * __**Cellular Respiration-**__ Process where you take a food molecule --Glucose-- and the presence of oxygen gas breaks down that glucose and release energy
 * Oxygen steals electrons from glucose releasing energy
 * Occurs in all of your cells
 * Waste is CO2 an H2O
 * **__Fermentation__-** process when you take the food and break it down to get energy without oxygen-- can't do this for very long
 * the waste of this is CO2 and Lactic Acid


 * O2- the 2 has to do with 2 atoms of oxygen
 * The respiratory system is the system that allows you to breath oxygen in and out so oxygen can be pumped throughout your body, and Carbon Dioxide come out of your blood.
 * Different parts of System
 * Nasal Passage- oxygen first enters your body through the nose
 * hair and mucus filter the air
 * sinus
 * Pharynx-throat
 * has two tubes: trachea or esophagus
 * Trachea- where we want the air to go down
 * leads you to the 2 lungs
 * Bronchi Tubes-in the lungs
 * Alveoli (Air Sacs)- where the gas exchange occurs where it goes in to the capillaries (putting the O2 into the blood system and the CO2 out of the blood
 * Capillaries- thin walled blood vessels
 * blood cells turn red once they get oxygen
 * 400,000,000 alveoli
 * alveoli look like a bunch of grapes