When blood flow through the kidneys decreases:
A)filtration decreases and water is conserved to maintain BP
B)filtration decreases and water is eliminated to raise BP
C)filtration increases and water is conserved to maintain BP
D)filtration increases and water is eliminated to raise BP

Question

Quizplus · Accepted Answer

When blood flow through the kidneys decreases, the kidneys activate the renin-angiotensin-aldosterone system to conserve water and maintain blood pressure. This leads to a decrease in filtration and an increase in reabsorption of water, which is necessary to maintain blood volume and pressure. Therefore, choice A is the best option, as filtration decreases and water is conserved to maintain BP.

When Blood Flow Through the Kidneys Decreases