Certified Electronic Health Records Specialist (CEHRS) Practice Exam

The primary function of the urinary system is the elimination of nitrogenous waste from the body. This system plays a vital role in maintaining homeostasis by filtering blood, regulating the balance of electrolytes, and ensuring the proper amount of water is retained or excreted. As metabolic processes occur within the body, nitrogenous wastes, primarily in the form of urea, are produced as byproducts of protein metabolism. The kidneys, which are integral to the urinary system, filter these wastes from the bloodstream and then concentrate them in urine, which is expunged from the body via the urinary tract. In contrast, hormone regulation is a function of both the endocrine and urinary systems, where the kidneys can produce hormones like erythropoietin and renin, but this is not the main job of the system as a whole. Digestion is solely associated with the gastrointestinal system, where food is chemically and mechanically broken down, while the absorption of nutrients primarily occurs in the small intestine. Therefore, while these functions are important in their own right, they do not encompass the primary role of the urinary system, which is focused on waste elimination.