Respiratory+Notes+EP

O2 is oxygen oxygen gives us energy release energy. the waste is carbon dioxide and water cellular respiration-happening in your cells happens in all of your cells fermentation-> food-little energy Respiratory system helps you breath in and out so oxygen can go through your body and carbon dioxide removed from your blood stream.

http://library.med.utah.edu/kw/pharm/hyper_heart1.html

heart 2 atria 2 ventricles 4 chambers left ventricle and left atrium on the right side if you are looking at someones elses heart. right side of the heart recieves blue blood

from a vein to the right atrium. from right atrium to right ventricle while heart is relaxed. then from the right ventricle to the lungs when the heart contracts. oxygenated blood from lungsenters left atrium while heart is relaxed. left ventricle while relaxed. so when the heart contractsred blood leaves the ventricle through arteries.