A fall in glomerular filtration rate (GFR) activates:
Correct answer: A. Juxtaglomerular cells to release renin
- A. Juxtaglomerular cells to release renin
- B. Adrenal cortex to release aldosterone
- C. Adrenal medulla to release adrenaline
- D. Posterior pituitary to release vasopressin
Explanation
Low GFR triggers renin release to maintain blood pressure.
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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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