Which of the following statements about the juxtaglomerular apparatus (JGA) is correct?
The juxtaglomerular apparatus regulates blood pressure by secreting renin, which activates the renin-angiotensin system. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.