Answers

2015-10-29T21:22:33+05:30
Our excretory system is made up of two spincters. When there is an urge to pass out urine the upper spincter is relaxed n the lower spincter is under the control of us... It is a conditioned reflex....so in nights the children don't have much capacity to hold urine and the lower spincter relaxes and the pass out urine... This urge is called as MICTURATION
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