A rise in sodium levels and extracellular volume leads to a rise in blood pressure.As a result,____.
A) renin levels rise, but aldosterone levels fall
B) renin levels fall, but angiotensin levels rise
C) renin and aldosterone levels rise
D) renin and aldosterone levels drop
E) renin levels drop, but aldosterone levels remain the same

Question

A rise in sodium levels and extracellular volume leads to a rise in blood pressure.As a result,____.  
A) renin levels rise, but aldosterone levels fall
B) renin levels fall, but angiotensin levels rise
C) renin and aldosterone levels rise
D) renin and aldosterone levels drop
E) renin levels drop, but aldosterone levels remain the same

Quizplus · Accepted Answer

A rise in sodium levels and extracellular volume leads to an increase in blood pressure, which in turn signals the kidneys to reduce the production of renin. Lower renin levels lead to decreased production of angiotensin II, which then leads to a reduction in aldosterone secretion. This feedback mechanism helps to lower blood pressure and volume, bringing them back towards normal levels.

A Rise in Sodium Levels and Extracellular Volume Leads to a Rise