NEET · BiologyHard
Which of the following physiological changes would occur if the juxtaglomerular apparatus cells were damaged, preventing the release of renin?
- A.Increased systemic blood pressure due to compensatory vasopressin release
- B.Decreased aldosterone secretion leading to hyponatremia and hyperkalemia
- C.Increased glomerular filtration rate due to afferent arteriole dilation
- D.Enhanced sodium reabsorption in the distal convoluted tubule
Show correct answer & step-by-step solution
Correct answer: B — Decreased aldosterone secretion leading to hyponatremia and hyperkalemia
Solution
- Renin converts angiotensinogen to angiotensin I.
- Angiotensin II stimulates the adrenal cortex to release aldosterone.
- Aldosterone promotes sodium reabsorption and potassium excretion in the distal tubule.
- Lack of renin leads to low aldosterone, causing sodium loss and potassium retention.
- Hence the answer is (B).
Attempt this question & track your score
Sign up free to answer, get instant scoring, and let SolveGini track which Biology topics you need to revise.
Attempt & Track Free →More Excretion practice questions
- The functional unit of the human kidney is known as the:
- Which hormone is primarily responsible for the reabsorption of water in the distal parts of the kidney tubules?
- Which of the following is the primary nitrogenous waste product excreted by humans?
- Which part of the nephron is responsible for the reabsorption of the majority of water and electrolytes?
- The process of removing nitrogenous waste from the blood using an artificial kidney is called:
- The counter-current mechanism in the loop of Henle is primarily responsible for maintaining a concentration gradient in
- In the process of micturition, which of the following events occurs when the urinary bladder is filled with urine?
- If the diameter of the afferent arteriole is significantly reduced while the efferent arteriole remains unchanged, what
- Which hormone is released in response to low blood pressure and acts to increase the reabsorption of sodium ions in the
- Which of the following substances is normally found in the glomerular filtrate but is completely reabsorbed in the proxi
- During the countercurrent mechanism in the loop of Henle, the interstitial fluid osmolarity increases from 300 mOsm/L at
- Which of the following conditions would most likely lead to a decrease in the net filtration pressure (NFP) at the glome