Utah Esthetics Written State Practice Exam

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Which system in the body is responsible for waste elimination?

Nervous system
Excretory system
Endocrine system
Digestive system

The correct answer is: Excretory system

The excretory system, also known as the urinary system, plays a crucial role in maintaining the body's internal balance by eliminating waste and regulating fluid levels. Its primary organs, including the kidneys, ureters, bladder, and urethra, work together to filter blood, remove waste products and excess substances, and excrete them as urine. This process helps prevent the accumulation of harmful toxins and maintains homeostasis. While other systems, such as the digestive system, also contribute to waste elimination by disposing of solid waste from food, the excretory system specifically focuses on the removal of liquid waste and the regulation of electrolytes and water in the body. The nervous system and endocrine system have different functions, with the nervous system responsible for transmitting signals throughout the body and the endocrine system managing hormone production and regulation. Therefore, the excretory system is distinctly tasked with the critical function of waste elimination.