Answer: the bladder is like a water balloon in that it holds urine in similar manner as the water balloon holds water. Also when the bladder is full and can no longer hold the urine it flows uncontrollably to the outside through the urethra in the same way the water balloon pops when the quantity of water is more than it can hold
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Answer: A bladder is like a balloon, because it holds urine, just like a balloon holds air. The urethra's function is to excrete urine from the human body.
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