What happens in micturition?
a)	Contraction of smooth muscles of bladder	b)	Relaxation of the urethral sphincter
c)	Release of urine	d)	All of the above

(d)

All of these.

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