Which of the following are major organs of the urinary system?

The urinary system is primarily responsible for the removal of waste products from the body and the regulation of water and electrolyte balance. The major organs of the urinary system include the kidneys, ureters, bladder, and urethra.

In this case, the kidneys play a crucial role in filtering blood to produce urine, while the ureters are the tubes that transport urine from the kidneys to the bladder. Together, they are essential components of the urinary system because they directly contribute to the function of urine production and elimination.

Other options do not represent major organs of the urinary system. For example, the appendix and pituitary glands are not involved in urinary functions, and while the bladder is an important organ, muscle alone does not constitute a major organ in this context. Lastly, the intestines are part of the digestive system and do not play a role in urinary functions. Thus, selecting kidneys and ureters reflects an accurate understanding of the components that make up the urinary system.