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What cells secrete renin? Group of answer choicesMacula densaMesangial JuxtaglomerularLaci

Question

What cells secrete renin?

Group of answer choices

  • Macula densa
  • Mesangial
  • Juxtaglomerular
  • Laci
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Solution

Renin is secreted by the juxtaglomerular cells of the kidney. These cells are located in the afferent arterioles that lead to the glomerulus of the nephron, which is the functional unit of the kidney. When blood pressure or blood volume is low, these cells release renin into the bloodstream. Renin then acts on a protein called angiotensinogen, converting it into angiotensin I. This is the first step in the renin-angiotensin-aldosterone system, which helps to regulate blood pressure and fluid balance in the body.

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