Physiology The factor/mechanism involved in glomerulotubular balance is: A signalling by macula densa cells B Oncotic pressure in peritubular capillaries C Contraction of the mesangial cells D Sluggish blood flow in medullary interstitium 💡 Explanation The factor/mechanism involved in glomerulotubular balance is: ✓ Correct Answer: B. Oncotic pressure in peritubular capillaries