Final answer:
The urinary tract is made up of the kidneys, ureters, bladder, and urethra, not the nephron, which is a component of the kidneys responsible for filtering blood and forming urine.
Step-by-step explanation:
The urinary tract is composed of the kidneys, ureter, and urethra. The nephron, often misunderstood as a part of the urinary tract, is actually a microscopic structural and functional unit of the kidney, playing a critical role in filtering blood and forming urine. The urinary system includes the two kidneys, which lead to the ureters, the bladder and the urethra.
The kidneys contain about a million nephrons each, where blood is filtered. The ureters, one attached to each kidney, are tubes that carry urine from the kidneys to the bladder. The bladder serves as a storage area for urine. During urination, urine passes from the bladder through the urethra, and exits the body.
In summary, the urinary tract's primary structures for the transport and storage of urine are the ureters, urinary bladder, and urethra, while the nephron does the work of urine formation within the kidneys.