The excretory organs of the human body are the kidneys, ureters, bladder, and urethra. The kidneys are responsible for filtering and removing waste from the body, as well as producing hormones that help regulate blood pressure, electrolyte balance, and red blood cell production. Ureters are tubes that connect the kidneys to the bladder and help transport urine. The bladder is a muscular organ that stores urine until it is ready to be released. The urethra is a tube that transports urine from the bladder to the outside of the body.