Answer :
The kidneys are stimulated to produce renin when the blood pressure drops.
What are the conditions during which renin is produced by kidneys?
The kidney is stimulated to produce renin under 3 conditions majorly.
- Increase in sympathetic nerve activity
- Decrease in blood pressure
- Decrease in sodium delivery to the distal tubules.
- When any of these conditions are present, kidneys are stimulated to produce renin.
- Renin in the presence of angiotensinogen releases aldosterone and this helps kidneys to increase sodium levels and in turn, helps fluid retention.
- Similarly, by certain changes, the blood pressure and nerve activity are brought back to the normal range.
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