The urogenital system includes which of the following?

The urogenital system encompasses structures related to both the urinary system and the reproductive system. The kidneys and urinary bladder are integral components of the urinary system, responsible for filtering blood, producing urine, and storing urine until it is excreted. This makes the first choice the only correct option as it directly involves organs associated with producing and eliminating waste from the body, as well as maintaining fluid and electrolyte balance.

The other choices do not relate to the urogenital system. The heart and arteries are part of the cardiovascular system, responsible for circulating blood and transporting nutrients. Skin and hair are components of the integumentary system, which serves protective and regulatory functions. Lastly, the stomach and intestines are part of the digestive system, involved in processing food and absorbing nutrients. Thus, the structure and function of the urogenital system are properly represented only by the kidneys and urinary bladder.