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MDCN Assessment Exam Anatomy & Physiology — practice by topic

Browse 14 questions across 1 Anatomy & Physiology topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Anatomy & Physiology topics

Urinalysis and Urine Transport (14)

Try a Anatomy & Physiology question

Which yellow pigment, made from the breakdown of heme, gives urine its normal colour?Read the answer and worked solution →Unusually large quantities of urine may point toward which conditions?Read the answer and worked solution →A dark tea or cola hue in urine most suggests disease of which organ or its drainage?Read the answer and worked solution →Why is ammonia rarely detected in fresh urine?Read the answer and worked solution →

Worked practice questions

Which yellow pigment, made from the breakdown of heme, gives urine its normal colour?

  1. Urochrome
  2. Melanin
  3. Carotene
  4. Biliverdin
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Correct answer: A. Urochrome

1. Urine colour comes mostly from the breakdown products of red blood cell destruction. 2. The liver converts heme into water-soluble forms excreted into bile and indirectly into urine. 3. That yellow pigment is urochrome; the other pigments listed colour skin, plants, or bile instead. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section Urethra_

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Unusually large quantities of urine may point toward which conditions?

  1. Kidney stones or cystitis
  2. Diabetes mellitus or insipidus
  3. Gout or severe dehydration
  4. Anaemia or low blood pressure
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Correct answer: B. Diabetes mellitus or insipidus

1. Urinalysis often provides clues to renal and systemic disease. 2. Unusually large urine volumes may point to diabetes mellitus, or to hypothalamic tumours causing diabetes insipidus. 3. Stones and cystitis change urine's appearance more than its volume. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section Urethra_

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A dark tea or cola hue in urine most suggests disease of which organ or its drainage?

  1. The spleen
  2. The pancreas
  3. The liver
  4. The heart
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Correct answer: C. The liver

1. Liver disease or obstructed bile drainage sends bile pigments into the urine. 2. These impart a dark tea or cola hue. 3. Bright red urine points instead to bleeding from a stone or cancer, a different clue. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 25 "The Urinary System", section Urethra_

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