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Excretory Products And Their Elimination

Question
CBSEENBI11001764

Explain micturition.

Solution

Micturition is the process of the discharge of urine from the urinary bladder.
The urinary bladder stores urine temporarily. the streching of the urinary bladder initiates a signal from the stretch receptore to the Central nervous system. The CNS then passes on the signal to initiate the contraction of smooth muscles of the bladder and simultaneous relaxation of the urethral spincter resulting in the release of the urine. 
Usually an adult human excretes on an average 1 to 1.5 litres of the urine per day.