2.69

2.69 Describe the structure of the urinary system, including the kidneys, ureters, bladder and urethra

The right and the left kidneys, each have separate blood supplies. They carry out excretion, filtration and osmoregulation. There is a tube coming out from each kidney (ureter), which carries urine to the bladder. Urine collected in the bladder is excreted through the urethra, down the vagina/ penis.