How is urine form show the diagram?

Urine is formed through a process involving filtration, reabsorption, and secretion in the kidneys. Blood enters the kidneys, where waste products and excess substances are filtered out in the nephrons, leading to the formation of urine. This urine then travels through the ureters to the bladder for storage before being excreted through the urethra. A diagram would typically depict the kidneys, nephrons, ureters, bladder, and urethra to illustrate this process.