During urine formation, which of the following processes create high osmotic pressure in the uriniferous tubule? |
|
a) |
Active absorption, followed by absorption of |
b) |
Active absorption, followed by absorption of |
c) |
Active secretion of into efferent arteriole followed by absorption of into efferent renal arteriole |
d) |
Active secretion of and absorption of into efferent renal arteriole |
During urine formation, which of the following processes create high osmotic pressure in the uriniferous tubule? |
|
a) |
Active absorption, followed by absorption of |
b) |
Active absorption, followed by absorption of |
c) |
Active secretion of into efferent arteriole followed by absorption of into efferent renal arteriole |
d) |
Active secretion of and absorption of into efferent renal arteriole |
(a)
Osmotic pressure is a measure of tendency to take in water by osmosis. During urine formation, approximately two-thirds of the and water filtered into Bowman’s capsule is immediately reabsorbed across the walls of proximal convoluted tubule. This reabsorption is driven by active transport of out of the filtrate and into surrounding peritubular capillaries. follows passively because of electric attraction and water follows them both because of osmosis.