Which of the following structures in the kidney is responsible for regulating glomerular filtration rate (GFR)?
The juxtaglomerular apparatus (JGA) regulates GFR by releasing renin, which activates the renin-angiotensin system to control blood pressure.
Ref: NCERT Class 11 Biology Chapter 16: Excretory Products and their Elimination Urine Formation - Glomerular Filtration