New Jersey State Board Esthetics Practice Exam

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What system aids in the removal of waste from the body?

Circulatory
Digestive
Excretory
Respiratory

The correct answer is: Excretory

The excretory system is responsible for removing waste from the body. This system includes organs such as the kidneys, ureters, bladder, and urethra, which work together to filter blood, remove waste products, and maintain the body's fluid and electrolyte balance. The kidneys filter out toxins and excess substances, which are then excreted as urine. This process is crucial for maintaining homeostasis and ensuring that harmful substances do not accumulate in the body. In contrast, while the circulatory system transports nutrients and wastes throughout the body, and the digestive system breaks down food and absorbs nutrients, they do not play the primary role in waste removal. The respiratory system is involved in gas exchange and expelling carbon dioxide but is not directly responsible for the removal of metabolic waste products from the body. Thus, the function of waste removal is specifically attributed to the excretory system.