Urinary / VISUAL EXPLAINER

Why Does Your Liver Help Make Waste for Your Kidneys?

The liver packages much amino-acid nitrogen into urea, which travels in blood to the kidneys. Kidney filtration and tubular handling help determine what leaves in urine; not all filtered urea is excreted immediately.

Liver-cell and kidney cutaways trace urea production, blood transport, filtration, partial reabsorption and urinary exit.
English illustration · P0058 · Version 1.0

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What the illustration shows

The liver makes urea and the kidneys handle its excretion. A torso locator shows liver, kidneys and bladder connected by a dotted route labeled circulating blood. An enlarged liver cell distinguishes mitochondrion and cytosol, with yellow urea symbols outside the mitochondrion entering blood. A kidney section labels cortex, medulla, renal artery, renal vein and ureter. Insets show filtration from a glomerular capillary, some urea reabsorption into a nearby capillary, and urea leaving in urine after a schematic break. Urea is one dissolved part of urine.

How to interpret this poster

AI-assisted educational illustration, adapted into web-sized images without changing its composition. This is general education, not an individual diagnosis or treatment recommendation.

EVIDENCE / CONTEXT

Sources and what they support

  1. Anatomy and Physiology 2e: 24.4 Protein Metabolism ↗

    Amino-acid processing and hepatic urea production; simplified transamination text is not treated as an exact equation.

  2. Your Kidneys & How They Work ↗

    Renal blood supply, filtration, tubular recovery and ureter-to-bladder urine flow.

  3. Anatomy and Physiology 2e: 25.6 Tubular Reabsorption ↗

    Some filtered urea is reabsorbed; filtrate is modified before excretion.

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Why Does Your Liver Help Make Waste for Your Kidneys?

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