Wednesday, November 2, 2011

2.67b Human organs of Excretion


  1. Main organs of excretion: 
    • Lungs- excretes Carbon dioxide 
    • kidneys- responsible for the excretion of excess water, molecule uria (nitrogen waste from amino acids), and salts.
    • skin- excretes water and salts, a little bit of uria. 
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