The greater the demand of conserving water, the greater would be the number of:
Correct answer: A. Juxta-medullary nephrons
- A. Juxta-medullary nephrons
- B. Cortical nephrons
- C. Capillaries of glomerulus
- D. Both (A) and (B)
Explanation
Juxta-medullary nephrons are responsible for establishing the concentration gradient in the kidney medulla, which is important for water conservation. They have longer loops of Henle that extend deeper into the medulla compared to cortical nephrons, allowing for greater concentration of urine.
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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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