Complex sentence: In the physiology of the kidney, tubuloglomerular feedback (TGF) is one of several mechanisms the kidney uses to regulate glomerular filtration rate (GFR).
Split into simpler sentences: In the physiology of the kidney, tubuloglomerular feedback (TGF) is a feedback system inside the kidneys. Tubuloglomerular feedback is one of several mechanisms the kidney uses to regulate glomerular filtration rate (GFR).