Kidney development caudally (downward) and connect with the bladder, thereby forming the ureters. The ureters will carry urine from the kidneys to the bladder for excretion from the fetus into the amniotic sac. As the fetus develops, the torso elongates and the kidneys rotate and migrate upwards within the abdomen which causes the length of the ureters to increase. Kidney development Kidney development, or nephrogenesis, describes the embryologic origins of the kidney, a major organ in the urinary system. This article covers a 3 part developmental process that is observed in most reptiles, birds and mammals, including humans. Nephrogenesis is often considered
Bladder Festival Bladder Festival The Bladder Festival or Bladder Feast ("Nakaciuq" "something done with bladders" or "Nakaciuryaraq" "the process of doing something with bladders" in Yup'ik), is an important annual seal hunting harvest renewal ceremony and celebration held each year to honor and appease the souls of seals taken in the hunt during the past season which occurred at the winter solstice by the Yup'ik of western and southwestern Alaska. On the Yup'ik Eskimo shamanism, while the hunter kills the body of the animal, he does not kill the "yua" (spirit or soul), which resides in the animal's bladder ("nakacuk" in Yup'ik)