what produces urine
Script: By this time, kidneys produce urine which is released into the amniotic fluid. In male embryos, the developing testes begin to produce and release testosterone. The bones, joints, muscles, nerves, and blood vessels of the limbs closely resemble those in adults.cript: By this time, kidneys produce urine which is released into the amniotic fluid. In male embryos, the developing testes begin to produce and release testosterone. The bones, joints, muscles, nerves, and blood vessels of the limbs closely resemble those in adults.