After we have studied the respiratory system, we open a new lesson which is the excretory system. In this lesson we studied about th three wastes that should be eliminated from our body.
We also studied the major organs of the system which are the kidney, ureter, urinary bladder and urethra. At the same time we discussed the functions and responsibilities of the system. We also learn the nephrons in our kidney,and its functions,and the processes of urine formation.
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