What is a common disorder associated with the urinary system?

Kidney stones are a common disorder associated with the urinary system due to their direct formation in the kidneys and their effects on urinary function. These stones can develop when certain minerals in the urine crystallize and form hard deposits. The presence of kidney stones can lead to various symptoms, including intense pain, urinary obstruction, and possible infection, highlighting their impact on the urinary tract.

In contrast, the other conditions listed do not primarily involve the urinary system. Heartburn is related to the digestive system and occurs when stomach acid flows back into the esophagus. A stroke, while serious, pertains to issues within the brain and nervous system. Arthritis affects the joints and is not related to urinary function. Understanding the specific associations of each condition helps clarify why kidney stones are classified as a disorder of the urinary system.