Bladder
Urinary Bladder is a three side pyramid shaped organ. It is an important part of human Urinary System. It stores urine, after it is formed, till excreted out of it via Urethra.
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Bladder
It has a base, 3 sides and an apex directed forwards. It is muscular and hollow from inside.
During urination, bladder muscle contract under action of Parasympathetic nerve supply and external and internal sphincters opened. Urine flows out of it via Urethra till its empty. Internal sphincter can be contracted voluntarily to delay micturition.
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