Urinary bladder an organ that regularly stores a hyperosmotic concentration of urine. It therefore is relatively impermeable and has multiple epithelial layers. The urinary bladder of the cetaceans (whales and dolphins) is proportionally smaller than that of land-dwelling mammals. In the whole class of Aves there is no urinary bladder per se. Although all birds have kidneys, the ureters open directly into a cloaca which serves as a reservoir for urine, fecal matter, and eggs. In crustaceans, the urinary bladder consists of two sets of lateral and central lobes. Urinary bladder The urinary bladder is a hollow muscular organ in humans and
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)