Respiratory+System+Notes-RJ

Need to get oxygen in our system to get energy 1. from vein to right atrium 2. from right atrium to right ventricle while heart is relaxed 3. then from right ventricle to lungs when heart contracts 4. oxygenated (red) blood from lungs enter left atrium 5. left ventricle while relaxed 6. so when the heart contracts red blood leaves left bentricle through arteries
 * Food and oxygen need to come together to create energy
 * Takes energy from food with the help of oxygen is called cellular respiration
 * food (glucose) +O2 (oxygen gas, electron magnet, worst free radicals almost ever) --> Release energy. The waste is CO2 and H2O
 * Happens in all of your cells.
 * Fermentation
 * Food --> Little energy the waste is CO2 and lactic acid
 * Nose
 * hair, mucus, sinuses
 * Pharynx
 * Trachea-Windpipe or esophagus
 * 2 lungs=bronlus, tronchillos, air sac (alveoli)
 * Gas exchange to the blood
 * [[image:respiratorydetail.gif]]
 * 400,000,000 alveoli
 * alveoli look like a bunch of grapes
 * 100 m2 of surface
 * Heart notes
 * 2 atria
 * 2 ventricles
 * 4 chambers total
 * Left ventricle and left atrium on the right side if you are looking at someone else's heart right side of the heart receives blue blood because it is veins bringing blood to the heart

Pulse: feeling the pulse of an artery every time heart contracts lub DUB sound: a valve b/t the atrium and the ventricle a valve b/t the ventricle and the artery (aorta)