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Practice Question

Which of the following substances is excreted by the kidneys to regulate blood pressure?

Answer Choices:

Correct Answer:

renin

Rationale:

💧Renin is secreted by the juxtaglomerular cells of the kidneys in response to low blood pressure.

🧪It initiates the renin-angiotensin-aldosterone system (RAAS), which increases blood pressure.

📘Other substances like erythropoietin regulate red blood cell production, not blood pressure.

🩸Renin indirectly causes vasoconstriction and fluid retention.


📌Core Message

The kidney secretes renin to regulate blood pressure through the RAAS pathway.

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Question Details
  • Category: ATI TEAS
  • Subcategory: SCIENCE
  • Domain: SCIENCE 2025
  • Answer Choices: 4
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