The conversation between human and AI assistant.
Do babies pee inside the womb? If so, where does it go?
Wow, I didn't know that. Does the mother's body produce all the amniotic fluid, or does the baby contribute too?
The amniotic fluid is produced by both the mother and the baby. Initially, it is mostly made up of the mother's plasma, but as the pregnancy progresses, the baby's kidneys start to produce urine, which contributes to the fluid. By the time the baby is full-term, the amniotic fluid is almost entirely made up of fetal urine.