The urinary system filters waste from the blood from "summary" of Anatomy & Physiology by Kevin T. Patton
The urinary system is responsible for filtering waste from the blood. This is a crucial function that helps maintain the body's balance of fluids and electrolytes. The process of filtering waste from the blood begins in the kidneys, which are the primary organs of the urinary system. The kidneys contain millions of tiny filtering units called nephrons. Each nephron consists of a glomerulus, which is a network of capillaries, and a tubule. As blood flows through the glomerulus, waste products such as urea, creatinine, and excess ions are filtered out and collected in the tubule. From the tubule, the waste products are then transported to the ureters, which are tubes that connect the kidneys to the bladder. The ureters carry the waste products to the bladder, where they are stored until they are expelled from the body through the urethra. In addition to filtering waste from the blood, the urinary system also plays a role in regulating blood pressure and producing certain hormones. For example, the kidneys produce a hormone called erythropoietin, which stimulates the production of red blood cells in the bone marrow.- The urinary system is essential for maintaining the body's internal environment and overall health. By filtering waste from the blood and regulating fluids and electrolytes, the urinary system helps keep the body functioning properly.
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