Which primary metabolic waste product is continuously eliminated through the Lungs (Respiration)?
Answer
Carbon dioxide
While the kidneys handle water-soluble wastes and the bowels handle solids, the lungs play a crucial, often overlooked, role in waste removal through respiration. The process of cellular respiration within the body naturally generates carbon dioxide as a primary metabolic waste product. The lungs are specifically tasked with the continuous elimination of this gas from the internal environment to maintain proper chemical balance in the blood and tissues. This process is a constant necessity, separate from the removal of solid or nitrogenous liquid wastes managed by the lower systems.
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