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Urinary System

Anatomy MCQs: Kidneys

Paired filtration organs that balance fluids, electrolytes, blood pressure, and waste removal.

5 questions

Kidneys

The essentials

Function
Filters blood and forms urine
Location
Either side of the spine below the ribs

The questions

  1. What is the functional filtering unit of the kidney called?

    1. Lobule
    2. Nephron
    3. Alveolus
    4. Villus
    Show the answer

    Answer: Nephron

    Each kidney holds roughly a million nephrons, each one a tiny filter-and-reclaim unit.

  2. Roughly how much fluid do the kidneys filter per day?

    1. 18 L
    2. 180 L
    3. 1,800 L
    4. 18,000 L
    Show the answer

    Answer: 180 L

    Of that 180 L filtered, nearly all is reabsorbed — only 1-2 L leaves the body as urine.

  3. Which structure funnels urine from the kidney into the ureter?

    1. Renal cortex
    2. Renal capsule
    3. Renal pelvis
    4. Renal medulla
    Show the answer

    Answer: Renal pelvis

    The pelvis is the funnel-shaped chamber that collects urine from the medulla's pyramids.

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2 more questions in this set

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