Answer: a large amount of water.
- A a large amount of water
- B very little water
- C no water at all
- D only a moderate amount
Correct answer: A. a large amount of water
Explanation: Because ammonia is highly toxic, plenty of water is needed to flush it out.
Filtrate flows through four functionally distinct stages of the nephron: Bowman's capsule filters blood, the PCT reabsorbs most useful substances unconditionally, the Loop of Henle builds a concentration gradient via counter-current exchange, the DCT secretes selected substances, and the collecting duct performs the final ADH-controlled water reabsorption.
Concept context
Nitrogenous waste, kidney structure, urine formation in the nephron, and hormonal regulation of excretion.
Read the full Excretory Products and their Elimination notes →