Question
During urine formation, which of the following process create thigh osmotic pressure in the uriniferous tubule?
Active Na+ absorption, followed by absorption of Cl−
Active Cl− absorption, followed by absorption of Na+
Active secretion of Na+ into efferent arteriole followed by absorption of Cl− into the efferent renal arteriole
Active secretion of Cl− and absorption of Na+ into the efferent renal arteriole
Solution
A.
Active Na+ absorption, followed by absorption of Cl−
Osmotic pressure is a measure of tendency to take water by osmosis. During urine formation, 2/3 of Nacl and water filtered in bowman's capsule, is immediately absorbed by PCT.
