The urinary system is responsible for filtering the blood, removing metabolic waste, and regulating the body’s water and electrolyte balance. This system is composed of several structures, including the kidneys, ureters, urinary bladder, and urethra.

The kidneys are bean-shaped organs located at the back of the abdomen. They filter the blood to remove metabolic waste and excess substances, forming urine. The urine is then transported from the kidneys to the urinary bladder through the ureters, which are long, thin muscular tubes. The urinary bladder stores urine until it is ready to be expelled from the body. When the bladder is full, nerve signals trigger the micturition reflex, allowing urine to be excreted through the urethra.