How the Body Works : Release of Urine
Grade: 5 - 12 | Find out how our nervous system controls the releases urine by acting on the muscular wall of the bladder, an internal and external sphincter.
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Urinary System  
Science Games & Activities :
GradesQuiz Games    (with special printable formats for classroom use)
7th - 12thUrinary System Quiz #1 
Urinary System Quiz #2 
Urinary System Quiz #3 

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