MCQ
What happens in micturition?
- AContraction of smooth muscles of bladder
- BRelaxation of the urethral sphincter
- CRelease of urine
- ✓All of the above
Steps for Urination Bladder fills with urine and becomes distended. Stretch receptors on the wall of urinary bladder send signal to the $CNS.$
$CNS$ posses on motor message to initial messengers to initiate the contraction smooth muscle of bladder and simultaneous relaxation of urethral sphincter causing the release of urine
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