Which organ filters old blood through the lymphatic system?

Study for the Pivot Point The Building Blocks of the Human Body 105E.01. Engage with multiple choice questions and flashcards, complete with hints and explanations. Get ready for your exam!

Multiple Choice

Which organ filters old blood through the lymphatic system?

Explanation:
The spleen is a lymphoid organ that filters blood rather than urine. In the spleen, old or damaged red blood cells are removed by macrophages in the red pulp, while the white pulp contains lymphocytes that help with immune defense. This combination makes the spleen the organ that handles cleanup of aged blood cells and contributes to immune surveillance, which is why it’s the correct choice. The liver mainly processes and detoxifies substances, the kidneys filter blood to produce urine, and the pancreas has digestive and hormonal roles, not filtering old blood.

The spleen is a lymphoid organ that filters blood rather than urine. In the spleen, old or damaged red blood cells are removed by macrophages in the red pulp, while the white pulp contains lymphocytes that help with immune defense. This combination makes the spleen the organ that handles cleanup of aged blood cells and contributes to immune surveillance, which is why it’s the correct choice. The liver mainly processes and detoxifies substances, the kidneys filter blood to produce urine, and the pancreas has digestive and hormonal roles, not filtering old blood.

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