The kidney and nephron in 3D

Change how much water is in the blood and the blood glucose, and watch the urine change.

Learn excretion properly

StudyAI writes clear notes on any topic you study, with practice quizzes, past-paper questions explained, and interactive models like this one in the notes.

Get free notes and a quiz on this
Free to start. No card needed.

Questions students ask

Why is there no glucose in normal urine?

All of it is reabsorbed in the first coiled tubule by active transport.

What does ADH do?

It makes the collecting duct more permeable, so more water is reabsorbed and the urine is more concentrated.

Free notes on excretion

More biology tools

All interactive tools
Use this on your own site or class page

Copy this code. It is free to use, as long as the link stays.