Which cells in the kidney sense sodium concentration and trigger renin release?
Correct answer: B. Macula densa
- A. Podocytes
- B. Macula densa
- C. Juxtaglomerular cells
- D. Collecting duct cells
Explanation
Macula densa cells detect sodium levels in distal tubule and signal juxtaglomerular cells to release renin.
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About Homeostasis
Homeostasis maintains a stable internal environment through the kidney and urinary system, thermoregulation and excretion. The kidney topics include filtration, selective reabsorption, urine formation and water balance, while thermoregulation involves sweating, vasodilation, vasoconstriction and hormonal control; excretion is different from egestion, which removes undigested food.
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