Water and chloride follow because the tubule is permeable to both. Filtrate becomes isoosmotic WRT blood iii. Loop of Henle a. Descending loop i. Characteristics impermeable to salts highly permeable to water ii. Consequences Water leaves tubule passively because outside of tubule, there's a high concentration of salt.
Filtrate becomes more concentrated b.
Distal Tubule a. Functions i. absorption and secretion ii. Removes toxic substances and waste. Liver conjugates wastes and toxins to glucuronic acid. Transporters in the kidney export detoxified wastes into the urine. D. Summary comment The effectiveness of the kidney at conserving water can measured by comparing the osmolarity of the urine to the osmolarity of the plasma.