Kidney: It is an organ for excretion and osmoregulation. It produces urine
Renal Artery: It carry oxygenated blood to the kidney
Renal Vein: It carries deoxygenated blood away from the kidney
Ureter: It carries urine from the kidney to the bladder.
Bladder: It temporally stores urine
Urethra: It carries urine from the bladder to the exterior. It also carries sperm cells to the exterior.
Sphinde muscle: it regulate the passage of urine from the bladder to the exterior urination.
