Identify the sphinctres in the bladder structure and explain their significance in renal physiology?

Explanation

Sphincters in the bladder: Stretching of the urinary bladder stimulates the CNS via the sensory neurons of the parasympathetic nervous system and brings about contraction of the bladder. Simultaneously, somatic motor neurons induce the sphincters to close. Smooth muscles contracts resulting in the opening of the internal sphincters passively and relaxing the external sphincter. When the stimulatory and inhibitory controls, exceed the threshold, the sphincter opens and the urine is expelled out.