Nephron Structure · Histology

Which cells of the distal tubule detect sodium concentration in the filtrate?

  1. Podocytes
  2. Macula densa cells
  3. Intercalated cells
  4. Principal cells
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Correct answer: Macula densa cells

Macula densa cells are specialized epithelial cells in the distal tubule. They monitor sodium concentration and help regulate filtration through the juxtaglomerular apparatus.

Difficulty: Medium Question 14 of 20

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