Question

The human kidney

• A. Is responsible for the storage of nutrients such as glycogen
• B. Concentrates the urine by actively transporting water out of the filtrate
• C. Produces more dilute urine when the collection ducts become less permeable to water
• D. Responds to antidiuretic hormone by incrasing urine output

Answer 1

The correct option is C Produces more dilute urine when the collection ducts become less permeable to water

Out of all the given options, human kidney is responsible for producing more dilute urine when the collecting ducts becomes less permeable to water. This is because, the filtrate enters the collection tubule form the distal convoluted tubule, where further reabsorption of water takes place. As a result, the filtration become more concentrated, which makes the filtrate hypertonic. When the collecting duct become less permeable to water it produces more dilute urine.