Armed Forces Day (Poland) Armed Forces Day, known also as the Feast of the Polish Armed Forces (Polish: ÅwiÄto Wojska Polskiego), is a national holiday celebrated annually on 15 August in Poland, commemorating the anniversary of the 1920 victory over Soviet Russia at the Battle of Warsaw during the PolishâSoviet War.
It performs the following important functions; 1  FORMATION AND ELIMINATION OF URINE: The main function of urinary system is formation and elimination of urine. 2  OSMOREGULATION: Kidneys are important osmoregulatory organs of human body. 3  ACID BASE BALANCE: Kidneys are important regulators of pH of body fluids.
The urinary system consists of the kidneys, ureters, urinary bladder, and urethra.The kidneys filter the blood to remove wastes and produce urine.The ureters, urinary bladder, and urethra together form the urinary tract, which acts as a plumbing system to drain urine from the kidneys, store it, and then release it during urination.t the same time that the sphincters relax, the smooth muscle in the walls of the urinary bladder contract to expel urine from the bladder. Production of Hormones. The kidneys produce and interact with several hormones that are involved in the control of systems outside of the urinary system. 1  Calcitriol.