And, yes, this is another organ system that develops in the embryo/foetus; the urinary system; the system that filters the blood and get rid of the fluid waste.
On top of the ureteric bud develops a metanephric cap.
This cap gradually develops into individual nephrons while the ureteric buds develop into multiple branches thereby collecting the filtered urine.
As you may remember, the kidney consists of individual nephrons, so it is also nice to show you how these nephrons gradually develop in the foetus:
And then of course, there are the other structures required for this urinary system, such as the bladder and the urethra.
But as stated before in other pages in this chapter, the embryology of the urinary system is quite complicated, also for multiple evolutionary reasons, and therefore no longer ‘belong’ to our basic approach to physiology.
But if you are interested in this fascinating branch of biological science, you are most welcome and I wish you luck and happiness!
