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Question: 1 / 495

Which of these organ systems does NOT contribute to the excretion of substances?

Urinary System

Lymphatic System

The lymphatic system is primarily responsible for the transportation of lymph, which contains immune cells that help in defending the body against pathogens, as well as the absorption of fats and fat-soluble nutrients from the digestive system. While it plays a critical role in immune function and fluid balance, it does not directly participate in the excretion of metabolic waste products like the other organ systems mentioned.

In contrast, the urinary system specifically functions to eliminate waste products and excess substances from the blood in the form of urine. The respiratory system aids in excretion by expelling carbon dioxide, a byproduct of metabolism, during breathing. The digestive system also contributes to the elimination of waste through the expulsion of solid waste materials from the body. Thus, the lymphatic system stands out as the system that does not have a direct role in the excretion process.

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Respiratory System

Digestive System

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