The urinary system is composed of the kidneys, ureters, bladder, and urethra. Its main functions include filtering waste products from the blood, regulating blood pressure, maintaining electrolyte balance, and producing urine.
The kidneys are bean-shaped organs located near the back of the abdominal cavity. They are responsible for filtering waste products and excess substances from the blood to produce urine. The kidneys also play a role in regulating blood pressure and producing hormones such as erythropoietin.
The ureters are muscular tubes that transport urine from the kidneys to the bladder. Peristaltic contractions help propel the urine through the ureters and into the bladder.
The bladder is a muscular organ that stores urine until it is expelled from the body. The bladder can expand and contract to accommodate varying amounts of urine.
The urethra is a tube that carries urine from the bladder to the outside of the body. In males, the urethra also functions as the passageway for semen during ejaculation.
Some common disorders of the urinary system include urinary tract infections, kidney stones, urinary incontinence, and kidney disease. These conditions can cause pain, discomfort, and disruptions in urinary function.